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Class Demonstration Ch. 01

By: NakedDan



Modeling for art classes can be a paradox. When I'm nude in a class, I always wish it could last longer, but when I'm in a long pose that keeps growing more and more uncomfortable, I wish the poses could be shorter. 

I was in one of those long poses, a standing one that was to last the entire three hour class, thinking that the clock was moving too slowly. My left leg was leaning on a chair which helped take some of the strain from my feet and legs. Sitting in that chair was Jessica, beautiful, brunette, and nude. She and I had modeled together for three classes that week. Most classes only used one model, but toward the end of the semester (and this was to be the last day of drawing for these students that spring) they paired us up for the more advanced students. I usually liked modeling solo more than with a partner. Most students would prefer to draw a female, so the drawings of me were usually an afterthought during those duo sessions. And the poses were longer to allow the students to try to draw both figures.

But if I had to model with a partner, I preferred Jessica. She was in her early twenties, with an athletic frame, shapely curves, long brown hair, and pretty face. Her breasts were medium sized and seemed to defy gravity the way they jutted out from high on her chest, with perky pink nipples. I loved doing gesture poses with her, and seeing her standing with one hip out, her thick but trimmed bush of pubic hair, was like looking at a Greek goddess. Like most models, the longer poses (and the one we were in then was the longest we'd done together) Jessica did seated or reclining, which was much easier on her body. But I always felt that the compactness hid her natural beauty. Not that she wasn't beautiful in a seated pose; you could just see so much more of her standing.

I like doing standing poses, and I had volunteered for this one. Yes, my legs get tired, but my feet or legs don't go to sleep like they are prone to do during some seated poses. And I think I look better. Sitting always compressed my abdomen and makes me, I think, look fatter than I am. Not that I'm fat. I stand just under six feet tall, and I weigh between 180 and 190 most of the time. I work out sporadically, so I think I've got decent muscle definition.

"Five minutes left," Audrey, the drawing teacher, announced to the class. "You need to take a step back and really look at your drawings to see what can be done to the figures in these last five minutes."

I was relieved. My right leg was supporting the majority of my weight, and I was ready to give it a rest. Audrey had given Jessica and me breaks throughout the class, but the period from the last break to the end was always the toughest. As I glanced at the clock to mark the time, so I would know how much of that five minutes was left, the door to the drawing studio opened. An attractive, middle aged woman looked into the room, glanced briefly at Jessica and me and then scanned the rest of the room until she found Audrey. Audrey saw her and motioned for her to come in, as if she had been expecting her. The woman was tall, almost as tall as I am, and wore a business suit with a skirt. Her hair was shoulder length blonde mixed with gray. She looked at several drawings as she made her way toward Audrey, looking at Jessica and me from each artist's position.

I had been modeling nude for almost three years, and I was quite comfortable posing in front of teachers and students. But whenever someone came into the studio whom I knew wasn't part of the class, my imagination tended to run away. Under the repeated gazes of this striking woman, I began to feel the stirrings down below. I heard Jessica take a deep breath. I could just see her in my peripheral vision if I turned my eyes toward her. From her pose, she had a perfect frontal view of my pelvic area. I saw her looking at me, at the middle-aged lady, up at my face, and then back down to my penis. Seeing her do that didn't help my situation. My eyes surveyed the room, and the students were all concentrating on the final stages of their drawings to take much notice of the one part of my body that wasn't holding the pose like it was supposed to.

"Hello, Dr. Tate," Audrey said to the newcomer.

"Hello Audrey," she replied in a husky voice. 

"Thank you for the invitation. And please, call me Katherine."

"OK, Katherine. We're just finishing up. Another three or four minutes, and the pose will be over."

Audrey and Katherine both looked at Jessica and me. Given my state of arousal, which thankfully wasn't a full erection, I wondered if I would get in trouble with Audrey. According to the girls I'd dated, I am much larger than normal down there, so it's difficult to hide when I'm excited, especially when I'm standing and supposed to be as still as possible.

"This is wonderful!" Katherine exclaimed. "Makes me wish I had taken art classes."

I could have sworn that Katherine's eyes were focused solely on my rapidly expanding cock, and I took a deep breath, averted my eyes, and tried to think of football.

"It's never too late," Audrey said to her. 

"There's a chair in the corner there, if you want to sit while you wait."

"Thank you," Katherine said and turned away to sit down.

I exhaled.

"You OK?" Jessica whispered to me.

It was the first time Jessica had ever said anything to me while we were in a pose together. I had always considered her aloof. She spent the majority of her break times reading science fiction paperbacks in the break room and never had much to say even when we weren't in a pose.

"What do you think?" I whispered back to her.

"Look fine to me."

Great, I thought, something else to keep my imagination, not to mention blood flow to my genitals, racing.

"One minute!" Audrey called to the class.

I started counting in my head, willing that last minute to speed up. I was at fifty-five when Audrey finally called an end to the pose and to class. Jessica wrapped in in her sheet almost immediately. She had been sitting on it during the pose and managed to wrap herself, stand, and stretch in one fluid movement. Still nude and leaning on the chair, I shifted my weight over to my left leg and tried to shake some of the strain out of the right one, my semi-erect penis swaying to the movement. I looked up and saw that a couple of the female students had stopped what they were doing to watch me. They both jumped when they noticed I was looking at them and resumed work on their drawings.

As I got the blood flowing back through my right leg, I couldn't help but notice that the visitor, Dr. Katherine Tate, was staring right at me and that she was biting her bottom lip. I suddenly felt rather exposed, and I decided that I had better get my robe on before my semi-erection turned into a full throbbing one.

"You have the weekend to work on the composition of these," Audrey was telling the class, "but you should already have both figures complete. We will critique these on Tuesday, and that critique will serve as your final. And I can't believe the semester is already over."

Dr. Tate stood as Aubrey gave these final instructions to the class and as the students cleaned up. Some of them were already packed up and heading out the door.

"Dan, Jessica," Audrey said to us, approaching the model stand, "thank you. Great job as usual. I think they got some good drawings."

"Awesome," I said as I tied the sash on my robe.

Dr. Tate walked up to the podium, and Audrey turned to her.

"Dr. Tate," she said. "Katherine. These are the models I told you about, Dan and Jessica."

Katherine's eyes seemed to light up as she looked at me. "Pleased to meet you," she said and extended her hand.

I was still on the model stand, so I had to bend down to shake it. Jessica stepped off the stand and onto the floor before shaking hands with Katherine herself.

"I'm Dan, and she's Jessica," I quipped.

Katherine smiled and giggled. "I gathered that," she said. "I am a psychology professor, and I was looking for two models for a special class I'm teaching. Audrey thought you might be interested, so she invited me here today to meet with you."

I am always looking for modeling work, so I was interested. But I was also asking myself why a psychology professor needed models.

"What kind of class is it?" I asked.

"Well," Katherine said, hesitating as she looked around the room. Students were still cleaning up, and a couple of them were still putting finishing touches on their drawings. 

"Is there somewhere we can talk in private?"

Jessica and I looked at each other and shrugged.

"Sure," I said. 

We got Audrey to sign our timesheets for our modeling hours and had Katherine follow us down the hall to the models' changing room. The other drawing class was doing the final semester critique and wasn't using a model, so I knew that we would be alone.

"So how long have you been modeling?" Katherine asked us as we walked down the hall.

"Two and a half years," I replied.

"Just this semester," Jessica said.

"What made you decide to do this?"

"I don't know," Jessica said. "It is the highest paying student job on campus."

"So, money then?" Katherine asked.

"I like it because I get to be me, without the mask," I chimed in. "There's such a purity in being yourself on that platform, with nothing artificial. Nothing hidden."

"You really like this job then," Katherine said as we reached the changing room.

"Yeah, I do."

I gave a courtesy knock on the door, took a quick peek inside to make sure it was vacant, and then motioned Jessica and Katherine inside. The changing room is small, and it can get crowded with up six people at a time coming and going between art classes, either getting dressed or undressed.

"How about you," Katherine said to Jessica, "do you like it?"

"It's OK."

"Anything in particular you like about it?"

"Yeah, the drawings of me, some of them, are amazing."

"Yes," Katherine mused, "I can see the appeal in that."

The three of us were silent for an awkward moment. My bag was sitting on the counter, and I unzipped it to retrieve my jeans and shirt, wondering if I should go ahead and get dressed with Katherine here.

"You said you needed models," I said.

"Yes," Katherine replied and then hesitated. "I'm teaching a special class in human sexuality, and I wanted to have two models, male and female, for the anatomy lecture."

She paused again, so I asked, "We would just stand there for your lecture?"

"Some," she replied, and I detected a nervous stutter in her voice. "I want to go over the difference in the overall male and female bodies, the breasts, width of the hips, musculature. But the main focus of this class would be on the genitalia. It is a human sexuality class, after all."

I imagined myself standing on a platform in front of a whole group of students, all of them just looking at me without drawing, while this woman talked about my penis. The thought was scary and exciting at the same time.

"I'm going to be candid with you," Katherine continued. "We..., the class, would want to see the male in different stages of arousal."

"So, you'd want me to get an erection?" I asked.

"Yes, eventually. We would want to see it go from flaccid to completely erect. And of course, you could use manual stimulation if you needed to."

Talking about being erect in front of a class, something I had always tried to avoid in the art classes where I had modeled, had sparked my imagination, and I felt the stirrings down below. Pretty soon, I thought, I would have a pretty big tent going in the front of my robe. Rather than have that, I decided to get dressed. I slipped the robe off while Katherine was talking, and her gaze immediately went down to my expanding cock.

"Yes, you would be really good for the class," she said with a hint of excitement in her voice. "It looks like you're on your way now."

I grabbed my jeans and held them out to put a foot in.

"No, please," Katherine said, putting her hand on my jeans. "Stay like this for a moment. I'd like to see you erect, if I could. And if you're still interested, that is."

"Ok," I said and set my jeans back on top of my bag. "I'm definitely interested."

"Good," she said, still gazing at my throbbing cock. It was rising and almost fully erect by then. I noticed Jessica, still wrapped in her sheet, staring at it, her cheeks red. 

"And if you're comfortable with it," Katherine continued, "maybe, if you can, demonstrate an ejaculation."

"What?" I said, not sure I had heard her correctly.

"Ejaculate for the class," Katherine repeated in a tentative voice, "if you're OK with it."

Jessica shifted uncomfortably, shifting her gaze away from my erection. I was in a state of shock, I think. Nude modeling was an unusual job, and I had been asked to do a lot of poses that I thought had been strange, like, for instance, getting on top of a ladder nude so students had to change their perspective, but I had never heard of anything like this.

"Umm, I guess," was all I could manage to say, my mouth dry.

"Think about it and let me know," Katherine said and turned toward Jessica. "And you, my dear. I'd like the class to see gynecological details. So I'd have you on an examining table in stirrups. Do you think you could do that?"

Jessica's facial expression was blank, as if she were completely dumbfounded. She shook her head.

"I don't know."

I thought of the times Jessica and I had posed together and couldn't think of a long pose of hers with her legs apart. So even though she was a nude model, I could tell that she was shy, at least about that part of her body.

"How much does this pay?" Jessica asked.

"I can pay each of you two hundred dollars. And I'll only need you for an hour or less."

I saw Jessica's eyes light up at that pay rate. Mine probably did too. For two hundred an hour, I would come as many times as Katherine wanted and in front of as many people as she could gather.

"OK," she said. "I'll do it."

"Wonderful!" Katherine exclaimed. "Now, I used to be an OB/GYN nurse, so I will make sure you're as comfortable as possible. The class will be small, about twenty students. We meet in the nursing building, room 214."

Katherine handed me her business card with the room number and a date and time written on the back.

"May 22nd?" I asked as she handed a card to Jessica. "That's less than two weeks away."

"Yes. Like I said, it's a special class. My cell is on the card if you have any more questions. Feel free to call me at any time."

I looked at the card then at Jessica, who still had a deer in the headlights expression on her face.

"OK," I said to Katherine.

"And thank you so much," she continued. "This is going to be fun. Fun. I want you both to have a lot of fun."

She gave us what I can only describe as a wicked grin, opened to door, took one last lingering look at my erection, and left the changing room. Jessica and I stood still and quiet, each of us holding Katherine's card, me naked with a hard on and her still wrapped in her sheet. We slowly looked at each other.

"Well, that doesn't happen every day," I said, and we both laughed.

"She sure seemed to like that," Jessica said, pointing to my erect cock.

I probably blushed. It did feel good to have her ogling me like she did.

"I don't think I've ever seen one that big," Jessica stated. "A lot of girth."

"Thanks," I said, rather sheepishly.

She grabbed her panties and put them on under the sheet while I started getting dressed. 

Jessica didn't take the sheet off until she had her jeans on, and her transition from removing the sheet to putting on her bra was performed in almost one fluid motion. I watched her out of the corner of my eye as I carefully tucked my penis to the side before zipping up my fly.

Once we were dressed, I held the door open for Jessica.

"I guess I'll see you a week from Tuesday," I said.

"Yeah," she replied and walked out, her normal aloof nature taking over.

We went different directions, and I spent my entire drive back to my apartment fantasizing about the class. Could I really jerk off to completion in front of twenty students? I wondered how many of them would be female versus male. And the thought of Jessica watching me jack off while naked with her legs spread and her feet in stirrups, her pussy spread open in front of me, didn't leave my mind until after I had gotten home and taken care of myself.

Of course, once my little head had been taken care of, my big head began to think about Katherine's proposal. I have learned the hard way that if something sounds too good to be true, then it probably is. I got on the computer and did a Google search on live models in Human Sexuality classes. The only thing I found was a professor at Northwestern University who got in trouble in 2011 for giving students the option to see a girl perform a live show with sex toys at an off campus location. I never found any other account of any other sexuality class using live models. Nude models were such a staple of any legitimate college art program, so I wondered why they weren't used in other classes.

I looked Katherine Tate up on the university's faculty directory. She was a full professor with tenure. Then I checked the class schedules. The spring semester ended that week, and the summer term didn't start until the first week in June. There was a brief session, called Maymester, between the spring and summer terms, but I didn't see any class in Human Sexuality listed on that schedule. I started to wonder if Katherine's class was even sanctioned by the university, even though it was going to be held on campus. I thought about calling Katherine and asking her, but I didn't want to jeopardize my chances of modeling for the class and missing out on that two hundred dollars. One thing I knew was that May 22nd couldn't get here fast enough.

To Be Continued...

Class Demonstration Ch. 02



The long awaited morning of May 22nd was clear and warm. I showered and shaved and couldn't get the nervous jitters to go away. It had taken a great amount of willpower, but I had refrained from masturbation for the previous two days in preparation for the class. So I was really feeling on edge. The contact list of the art department models was held by magnets on my refrigerator door. I was tempted to call Jessica to make sure she remembered and was coming. But I thought she might find that insulting. She had modeled for art classes all semester without missing one. I knew this because if she had missed, Rhia, the model coordinator, would have stopped putting her on the schedule.

Katherine Tate had written 10:00 AM on the back of her business card. I was ready to go before 8:00, but I stayed in the apartment surfing the Internet and messing around on Facebook, my leg bouncing under my computer desk. When I finally couldn't stand to sit at home any longer, I grabbed my modeling bag with my robe, got in my car, and drove to the university campus. The parking lots were almost empty since the spring semester was over and the summer session hadn't begun. That thought made me wonder again about Dr. Tate's class. Why hadn't it been listed anywhere on the university's schedule of classes?

I parked and took a long walk around campus, enjoying the warm sunshine, thoughts of college girls gazing at my erect cock filling my head. I reached room 214 of the nursing building forty-five minutes early. The room looked like a regular small lecture classroom, with desks arranged in rows and a whiteboard behind the instructor's lectern. I had heard Katherine tell Jessica that she would need to be on an examining table in stirrups, so I was surprised that there was no such table in the room. I sat in one of the student desks directly in front of the lectern and took my phone out to check my Facebook and email. My leg was still bouncing as it had been at home.

After finding nothing interesting on my phone, I finally decided to go for another walk. Katherine entered the room just as I stood up. She was wore a short sleeved yellow blouse and black slacks and carried what looked like a laptop bag.

"Dan!" she exclaimed. "You're really early."

"I know. I'm always early. Better than being late."

"This is true," Katherine said with a smile as she walked into the room. "It's a sign of someone who really likes his job. You love being a nude model, don't you Dan?"

"Yes, I do."

"I thought so. I think you will enjoy my class."

She sat her bag on the desk beside me, zipped it open and withdrew a file folder.

"Since you're so early, you can have a lot more time to do fill out the pre-lab survey," she said and handed me a packet of stapled pages.

"There's a survey?" I asked, taking the packet from her. My hand was shaking a little more than I would have liked.

"Yes. It's a big part of my research."

"Research?"

"Yes. This class isn't really a class, per se. It's part of an independent research project I've got going on. The twenty-one students are really just volunteers for the project."

I looked at the first questions on the survey, and they seemed simple enough. 

"And here's a pen," Katherine said. "Your name will never appear in any reports or books, so please answer each question with brutal honesty."

I took the pen and sat back down in the desk.

"Is the class meeting in here?" I asked as I wrote the number 28 in answer to the first question, about my age.

"No, it's actually next door," she replied. "I wanted you to come here first so you could fill that out. I'm going to leave you to it and go get the room ready. Thank you so much for doing this Dan."

"You're welcome. Thanks for asking me to do it."

We looked at each other and smiled before she walked out of the room. I turned my attention to the survey. "Are you a virgin?" I wrote no. "Are you currently involved in an ongoing sexual relationship?" I thought about my last steady girlfriend and how she freaked when I started modeling for art classes. Again, I wrote no. "Do you consider yourself an exhibitionist?" I thought for a moment about how much I loved modeling and about that last class I did when Katherine had walked into the studio at the end and stared at my exposed cock, how much I enjoyed that simple thing. I wrote YES in capital letters. "Have you ever been arrested or cited for any offense related to your exhibitionism?" I wrote no.

The only question on page two was, "Have you ever gone nude in public, and were you seen by anyone or not? If so, please describe your experiences?" The rest of the page was blank, and I filled it in with how I, as a teenager, used to go to a local cemetery at night and take naked walks, something I hadn't thought about in years. I wrote that I didn't think I had ever been seen but that I had always fantasized about a group of high school girls finding me and making sexual sport of me.

I spent a half hour writing answers to the rest of the questions, and by the time I was done, I felt like a total deviant. Katherine and Jessica walked into the room just as I finished.

"Hi Jessica," I said. "You made it."

She shrugged, and I noticed that she had her own survey in her hand, along with a paperback book, something by Orson Scott Card. "Yep," she said.

"You can sit and start on that," Katherine said to Jessica, motioning to one of the desks.

Katherine took my survey from me as Jessica chose a desk near the door, and, letting her backpack slide off her shoulders and drop to the floor, she sat down. Taking a deep breath, she started writing her answers.

"I know you're both nervous," Katherine said, "but I want you to just relax and have fun. I chose you because you're used to modeling nude in a classroom environment. Yes, there is a sexual element to this that you may not be used to. And after my lecture portion, I want you both to really play, either with yourselves or with each other."

"Seriously?" I said, looking to Jessica, but she kept her head down, working on her survey.

"Yes. My research is mainly on the nature of voyeurism, but exhibitionism is an element of that. I want this to begin like a regular Human Sexuality class that seems to go out of control after the lecture. There will be a camera on the class, but neither of you will be visible. Unless you wander off from the front of the room, that is. And after you leave, those students, volunteers, will be rather busy with different activities. Surveys, discussions, etc."

Jessica was still filling out her form and hadn't reacted to Katherine's shocking declaration that she and I were to "play" after the lecture. I wondered if the two of them had talked during the twelve days since we first met Katherine.

"So, by play you mean actual masturbation?" I said, not believing the words coming out of my mouth.

"Yes, that's one option. You do remember that I said that we would like to see you ejaculate?"

"Yeah."

"Well, that's not exactly going to happen by itself now, is it?" Katherine said with a little laugh.

"No, I guess not."

I took a deep breath, wondering if this was real. I've always tried to be professional when modeling for art classes. Even though the models are nude, there is nothing overtly sexual ever discussed or presented by any of the teachers, models, or students. And yet, I still fantasized about just such a scenario, modeling with an erection, seeing a beautiful female model spread out in front of me. I thought about pinching myself, wondering if this was really happening to me.

Jessica finished her survey and handed it to Katherine without a word. She finished so quickly that I wondered if she'd had the same survey I did.

"Thank you Jessica." Katherine put both of our surveys into a manila folder in her laptop bag, then looked back up at the two of us. "Are you ready?"

I was practically bouncing with anticipation. "Yes," I said. Jessica just nodded.

Katherine smiled and said, "Follow me then."

She led us out of the room, down the hall, and into what looked like a small theater. There must have been a hundred seats on raised rows. At the bottom was a small stage with an examining table in the middle. We followed Katherine down the steps to the front of the room. There were people sitting in the first two rows. I did a quick count, something I usually did in every art class, and came up with twenty-one, thirteen girls and eight guys.

"Good morning everyone," Katherine said to the group. She motioned to a door behind the examining table. "You can change in there," she said in a quiet voice to us.

"Good morning," several voices from the group said in response.

Jessica and I went through the door which opened into a small store room. We could still hear Katherine talking even after we had closed the door.

"I'd like to thank each of you for agreeing to participate in this project. As you know, my name is Dr. Katherine Tate, and I'm a professor in the psychology department here at the university. Our two subjects are Dan and Jessica. You just saw them come in with me, and they are getting ready."

As Jessica and I removed our clothes, Katherine continued giving what sounded like a general introduction to sexual anatomy. I got completely naked before even taking my robe out of my bag. In previous encounters with Jessica in the models' changing room in the art building, she had always taken off her top and put her sheet around her before removing her pants and underwear. But today, she stripped down completely before wrapping the sheet around herself. This sight of her toned body, her luscious breasts and pink nipples, and her nicely trimmed pubic hair was enough to get my blood flowing. I put my robe on, covering my semi-erection.

"Do we wait for her to call us?" I whispered.

Jessica shrugged. She was always quiet, but, except for taking it all off before covering with her sheet, she was especially withdrawn today. Katherine knocked on the door, and said, "We're ready."

Jessica and I looked at each other. We both took a deep breath, and I opened the door. We walked out to a smattering of applause.

Katherine directed us to the front of the stage, just in front of the examining table, with Jessica on the right side of it and me on the left. Once we got into position, Katherine nodded. I took off the robe, feeling the rush of exposure. Taking the robe off in front of a new class was always exhilarating and liberating, and just a bit humbling. Rather than letting my robe fall to the floor, Katherine floated behind me and took it. She moved from me over to Jessica and took her sheet from her.

"You'll notice that both of our subjects have fairly normal to athletic proportions," Katherine said as she opened the door to the store room and threw the robe and sheet inside. "Jessica, for instance, was on her high school swim team and still swims laps regularly."

How the hell did she know that, I wondered, and then realized that she and Jessica had to have spoken at length before the class. I glanced over at Jessica, who stood tall and naked, with her head up, gazing at some fixed point above where the class was sitting. I turned back to the front, scanning the group. A young blonde girl smiled at me when our eyes met. I wondered how my penis was doing, and when I shifted my stance, I felt it swaying against my thigh. I wasn't erect, but I wasn't completely flaccid either. I smiled back at the blonde and kept looking at the group.

"Dan has been modeling for the art department for more than two years and feels quite comfortable being naked in a group setting," Katherine said. "So feel free to look at both of our subjects all you want."

My eyes were drawn to a young brunette with denim shorts and an old '80s style Joan Jett and the Blackhearts concert t-shirt. Her eyes seemed to scan every inch of my body as she shifted in her seat. Her breasts were small, and she seemed to be braless under the shirt as I could see the prominent points of her nipples. I knew I was supposed to show them an erection eventually, but I really needed to clear my mind so I didn't sport one too early.

Katherine talked about our general body shapes, noting that my hips were narrower and my shoulders broader than Jessica's. She then started talking about our genitals, and she started with me, moving so that she stood right beside me.

"In uncircumcised males, the foreskin normally covers the head of the penis and then retracts during arousal," she said. "But Dan is circumcised, so the head is always exposed." She bent over slightly, pointing at my dick. "The head here that looks like a helmet..." Katherine looked up at me and whispered, "Could you hold your penis up so they can see the bottom side?" I held it up against my belly by the tip, and she continued with her lecture. "... is called the glans. There are approximately 4,000 deliciously sensitive nerve endings throughout the surface of the glans that are the primary source of a male's physical stimulation during sexual intercourse."

Katherine described the various shapes of the glans and of the rest of the penis using a variety of technical words. As she talked, I looked out at the group of twenty-one, but the one I found fascinating was Joan Jett girl. She was leaned forward as far as she could over the desk, as if she couldn't stand not having a closer view. Her nipples were attempting to cut holes in that Joan Jett t-shirt, but the thing that really sent me over the edge was seeing her right hand between her legs. Her fingers seemed to be moving, although the shadows made it difficult to see exactly what she was doing. Her dark lashes seemed to wave at me every time she blinked her eyes.

"OK, you can let it go now," Katherine said, and it took me a couple of seconds to realize that she was talking to me.

I let go of my penis, but I didn't feel it go very far. I heard a few gasps, and I saw Joan Jett girl shudder. Looking down, I saw that I had a full ninety-degree erection.

Katherine smiled and said, "And that, ladies and gentlemen, is a wonderful example of a male erection." She gazed down at my cock while she talked to the students. "The average erection is somewhere around five inches long. Dan is bigger than average. I would say that he's between seven and eight inches long, but it's the girth that really impresses. Have you ever measured your circumference?"

I shook my head, my mouth too dry to speak.

"Let's take care of that right now."

She moved behind me and opened a drawer on the side of the examining table. I turned and saw her take out a cloth tape measure.

"You don't mind if I inadvertently touch you, do you?"

Once again, I shook my head.

"All right, we'll just go ahead and measure the length too. I'll start at the base on the top side of the penis."

Katherine put her finger with the end of the tape into the small patch of pubic hair and extended the tape. I watched everything she did since I was curious. I hadn't measured the length of my dick since high school. It had been an even seven inches then.

"Seven and three quarters," Katherine announced. "And now the width."

She wrapped the tape measure around my cock just below the ridge of the glans, her fingers glazing over my sensitive skin and sending shock waves that I felt in my gut and spine. She held the tape up and looked closely at it.

"Over a full six inches in circumference," she gloated. There were a few ah's from the class, and Joan Jett girl bit down on her lower lip. "In my experience, that's well above normal. I hope your girlfriends weren't too small and tight."

"They wouldn't be for long," a female voice said. Laughter followed, but Katherine held up her hand.

"Remember the protocols we all agreed to," she said in a stern voice.

There were a few murmurs, followed by silence.

"Now Dan, could you turn and give us a profile?"

I turned, my hard cock waving in the air, toward the examining table and Jessica, who was still standing. She was turned slightly toward me with one hand on her hip, watching the whole thing. She and I smiled at each other.

"You can see how rigid the penis gets when it's erect. Dan's is sticking up at a slightly higher than 90 degree angle from his body. And that little bead coming out at the end is called bulbourethral fluid, although the slang term is pre-cum. That serves as a natural lubricant for sexual intercourse, and it also helps protect the sperm during ejaculation. It is not seminal fluid, but if the male has urinated since his last ejaculation, sperm can get into it."

Per-cum was one of the things I fought against in art classes. I had never gotten fully erect, but pre-cum can appear during any partial erection. I had noticed it in a couple of classes, felt embarrassed, and discreetly tried to wipe it off if I could. But due to the sexual nature of this class, I didn't feel much embarrassment by it at that moment.

"Dan," Katherine whispered in my ear, "could I get you to lie down on the examining table? I want to talk about your testicles."

I hadn't expected this, but I slowly nodded. Katherine swiftly rolled a sheet of wax paper over the vinyl padding of the table, talking as she did so.

"Dan is going to get on the table so we can talk about the rest of the male anatomy."

I lay down as Katherine unfolded the stirrups. I loved over at Jessica who had a smirk on her face, and I wondered again how much she and Katherine had talked.

Looking at the ceiling, I put my feet in the stirrups, and then I did feel embarrassment. Katherine talked about my testes and scrotum and what each of them did. My cock was lying on my belly, and the drop of pre-cum had fallen and rolled into my belly button. The erection had started to subside, probably from the humiliation, until I felt Katherine's fingers gently push up on one testicle as if weighing it. Her touch once again sent a charge through my body.

"In order to produce sperm, the testicles have to be kept at a certain temperature somewhat lower than our internal body temperature," Katherine lectured. "Because of that, they have to be kept outside the body in the scrotum, which acts as a thermostat. You guys will know that it shrinks up when it's cold and hangs loose when hot. That's also why getting in a hot tub will have a temporary adverse effect on one's fertility. So when you get married and want to try to conceive a child, stay away from hot tubs."

I felt both testicles being pushed up, and Katherine started talking about my perineum and anus, showing them to the class. My feelings of humiliation magnified, I raised my head and looked down, hoping that Katherine was almost finished. I almost gasped in shock when I realized that it was Jessica and not Katherine holding my balls. Jessica looked at me, smiled and winked, then looked back down at my cock. I sensed a conspiracy, but it was a conspiracy I was willing to go along with for the time being. I lowered my head, as Katherine talked about the prostate and the methods for examining and/or stimulating it. I was starting to get scared that she or Jessica was actually going to stick a finger up my ass in front of the entire group when Katherine finished and told me I could get up.

I removed my feet from the stirrups and rolled off the table, glad I wasn't a woman and had to endure that at the doctor's office on a regular basis. Katherine whisked the wax paper off the table, wadded it up and threw it in the wastebasket against the back wall.

"If you'll just stand here while I talk about the female," Katherine whispered to me. I nodded and took my former place beside the table.

Katherine moved to the other side and said, "Now let's talk about the female. The external differences are apparent, and that's because, unlike the male, the female sexual organs are almost all internal."




Class Demonstration Ch. 02



I watched as Katherine talked about and pointed to Jessica's breasts. She had Jessica stand in profile and talked about the hips and buttocks, and how the female body carried a baby during pregnancy. I just watched, taking in Jessica's shapely legs, her smooth skin, the curve of her pubic mound, and the luscious curls of her bush. The sight, which I was unabashedly enjoying for the first time, was enough to keep my dick hard.

Katherine once again pulled a sheet of wax paper over the examining table and asked Jessica to lie down.

"Now let's take a look at the vulva in as much detail as we can," Katherine said as Jessica got settled into the stirrups. "Although Jessica did leave a very attractive bush, she graciously removed the hair around her labia so that we can see the anatomy in more detail."

Katherine put surgical gloves on and began talking about the outer and inner labia. I leaned forward as far as I could, trying to see Jessica's most private and sensitive parts. Even though we had modeled together for art classes on at least four occasions, I had never seen so much as a hint of pink between her legs. Whenever Katherine would say something, she would step aside and make sure the class got to see everything. Seeing Jessica's legs apart with Katherine's gloved fingers spreading the folds of her pussy seemed to increase my heart beat. I looked down and saw my cock throbbing. Someone could have taken my pulse just from watching my dick. I looked up and saw Joan Jett Girl's eyes going from Jessica's pussy to my cock, her hand still between her legs and her nipples still poking against that shirt.

"Up top," Katherine said, "is the clitoral hood. A lot of men mistake it for the clitoris, but that's actually underneath. When you think about it, the hood is like the foreskin on a male, and the clitoris is like the glans." Katherine pushed up on the clitoral hood, and even from my angle, I saw Jessica's clit emerge. "There is the clitoris. If you will recall, I said that the glans of the penis contained 4000 nerve endings. This clitoris has double that, and as you can see by looking from Jessica's clitoris over to Dan's penis, the clitoris is much smaller. So the clit may be the most sensitive and sensual part of a human body."

I noticed that Jessica's rate of breathing had increased, and she had almost a grimace on her face. Wanting to do something to let her know I was there and commiserated with her and knowing that she had, with a wink and a smile, just handled my balls, I reached out and took her hand. She squeezed it, looking at me with a relieved smile. Jessica closed her mouth and eyes, breathing noisily through her nostrils.

"Jessica has been gracious enough to grant all of you a rare view at a cervix," Katherine said, taking a plastic tool from a drawer on the other side of the examining table. She squirted some lube on it, rubbing it along the length.

"I'm going to insert the speculum now," she whispered to Jessica, who nodded without opening her eyes.

Jessica's grip on my hand tightened as I watched the speculum go into her pussy. Katherine adjusted a couple of things on it, then moved the pen light into place.

"There it is," Katherine said loudly enough for everyone to hear. "Everything looks normal and healthy." She looked up at me. "Would you like to see?"

I nodded, and Katherine motioned me over.

"Don't step off the dais unless you want to be on camera," she whispered to me.

Letting go of Jessica's hand, I stepped over, keeping my feet firmly planted on the platform, leaned back, and looked inside Jessica. I saw what appeared to be a pink disc with a hole in the middle, the light making it look close to the opening of her pussy.

"That's her cervix?" I asked.

Katherine nodded.

"It doesn't look very deep."

"The vagina expands during intercourse," Katherine explained. "Although someone of your size would hit the cervix during deep thrusting."

I stood transfixed, looking inside this beautiful girl, at the cervix, the pink walls of her vagina held open by the clear plastic speculum, the tuft of pubic hair above, and the delicate folds of skin all around. Something like a charge of electricity passed through my body, and it almost felt like I was going to cum right there.

"Are you all right?" Katherine asked.

I looked down and didn't see any semen, but my cock was still throbbing and hard. Katherine reached over and gave it a caress with her fingertips, out of view of the class.

"Yeah, I'm fine," I said and moved back to the side of the table.

"All right," Katherine said to the class. "Let's start on the first row to the left. Please come up, but don't step up on the stage." She angled the light to make it easy to see inside Jessica from a lower angle.

The student volunteers came up and spent about thirty seconds each looking into Jessica's pussy. I stood facing them, and a few of the girls took the opportunity to get a closer view of my erect cock. After six or seven students had come up, Jessica reached out and wrapped her hand around my dick. I drew a deep breath at her intimate touch, but I didn't try to step away. Two more students took their turn looking before the blonde who had smiled at me at the beginning of the class approached. She raised her hand, and Katherine said, "Yes?"

"The cervix looks kind of like the end of his penis."

Everyone looked at my cock then, Jessica's hand and fingers hiding most of it other than the very end.

"Why yes it does!" Katherine exclaimed. "I'm so glad someone brought that up. Looking at both of them, especially at the same time, you can definitely see the resemblance. It just goes to show that men and women are not as different as we make them out to be."

The blonde moved along. When Joan Jett girl walked up, she had her hands in front of her, but I still noticed the wet spot on the front of her denim shorts. She kept her gaze on my cock until she got right in front of Jessica and only then pulled her eyes away to look inside.

When the last student had filed by, Katherine gently removed the speculum. As she was doing so, Jessica looked at me and whispered "Come here."

I stepped over, thinking that she was going to say something in my ear. But before I could bend down, she raised up on one elbow and put her mouth around my cock. My knees went weak, and I almost fell. My eyes darted up to Katherine, thinking that she would yell at Jessica to stop, that this wasn't proper, but Katherine merely watched as Jessica's tongue washed over my erect cock. Things got wild after that...

To be continued....



Class Demonstration Ch. 03



Once I got over the initial shock of Jessica putting her mouth around my cock, Katherine started speaking to the class.

"It is a common practice for college art departments to use nude models, but it is highly unusual to see them in Human Sexuality classes."

Jessica kept licking and sucking my cock while Katherine talked. She scraped her teeth over the ridge of the head, looking up at me as she did so. I took a step forward, and she took me deep into her throat, the suction feeling exquisite. My hand moved to Jessica's breast, squeezing the soft flesh, my fingers flicking her nipple. I had never cum from merely a blow job, but I knew that Jessica could get me there quickly if this continued.

"The difference," Katherine continued, "is that art classes focus on the whole body, almost to the exclusion of the genitals. But sexuality classes necessarily focus on the sex organs. And as we can see, live models are not pieces of plastic; they are living people with physical, emotional, and sexual needs. Rather than deny them the opportunity to fulfill those needs, I think that we should take the opportunity to witness the implications of asking two people to open themselves up so fully, as Dan and Jessica have."

Jessica's head moved back and forth, my cock going in and out of her mouth. Emboldened by Katherine's words to the class, I let my eyes sweep over Jessica's lusciously tan body. Her feet had come out of the stirrups, but her legs were still spread wide open. That visual and the sensations of her mouth were almost too much, and I pulled away. I couldn't cum yet, not without returning the favor. I wondered, briefly, what kind of lubricant Katherine had used when she had inserted the speculum into Jessica, but I decided I didn't care. I wanted her cunt, to see it, smell it, kiss it, lick it, possess it.

I stepped toward the foot of the table, glancing at the class as I did so. All twenty-one students were staring with rapt attention. My eyes sought out the girl with the Joan Jett t-shirt and saw that she was masturbating openly now through her clothes, one hand between her legs and the other holding one of her breasts, apparently squeezing her nipple. I realized that if I stood at the foot of the table, the students would see nothing except my backside. Grabbing Jessica's knees, I turned her sideways, the wax paper twisting and ripping underneath her. She couldn't lay back now; she had to sit and hold her back up. She put her hands on the far edge of the table and watched me as I crouched, moving my face to her crotch and inhaling her scent. I moved the tip of my tongue down one labium, then up the other. She tasted salty sweet, with a hint of strawberry. Was that something she put on, or had Katherine used a flavored lube? I didn't care enough to ponder the question for more than a second. My tongue found the hood of Jessica's clit, and I felt her body spasm. As I kissed and licked, my hands caressed the insides of her thighs, moving up and down with the rhythm of my licking. Jessica's hand moved to the back of my head, her fingers brushing through my hair.

My tongue flicked Jessica's clit, and she stiffened. I put my lips around it and sucked it into my mouth, inserting a finger into her vagina as I did. Her hold on the back of my head stiffened, and she pushed my face further into her crotch. I continued sucking on her clit, rubbing the edge of my teeth over it without biting down too hard. I inserted a second finger into her, pushing up, trying to find that place where the G-spot is supposed to be. I could hear Jessica moaning, her breath rapid and shallow. I started fucking her with my fingers, curling them upward with every thrust, as I kept sucking, licking, and biting her clit. The muscles in her vagina tightened, and her body stiffened as she yelped and pushed my head away.

I stood, withdrawing my fingers and putting them in my mouth, making a show of sucking her juices from them, my erection pulsing in front of me. I heard murmuring from the class as Jessica's eyes blazed at me.

"Fuck me," she said softly, pleadingly.

The table wasn't quite the perfect height. I had to stand on my toes slightly to line my cock up with her opening, but that was fine with me. I entered her slowly, savoring the welcoming walls of her pussy. Her eyes closed, and she exhaled as I pushed all the way into her, our pubic hair mingling. I pulled backward, not quite all the way out, and then thrust deeply and rapidly into her.

"Ahhh," she gritted.

We fucked slowly, but each thrust had force. I rammed it into her, imagining the head of my cock hitting the cervix that I had just seen, the opening at the tip of my cock kissing the pathway through her cervix and into her womb. I looked down, watching my cock move into her pussy, those magical lips enveloping it. I heard a long, high grunt from the class, but I didn't look. Just guessing, but I thought that Joan Jett girl had just gotten herself off.

Being on my toes was starting to wear on my calves, and I pulled out of Jessica. My cock stood at attention, glistening wet in the lights of the room. I wondered briefly what the twenty-one people in the audience were thinking and decided that it didn't matter. I did intend on giving them a hell of a show though.

"Step down," I said.

Jessica slid off the table and stepped toward me. I turned her around and gently pushed on her back, letting her know that I wanted her to bend over the examining table. She did, and I thrust into her from behind, watching myself go into her. As I fucked her, slowly at first and then going faster, Jessica put her left knee up on the examining table. I looked at the class and realized that she had just given them all a perfect and unobstructed view of my dick penetrating her.

After avoiding masturbation for two days and then showing my erection off to a class of 21 people, fucking Jessica was just too much for me. I felt myself about to explode, and I knew that nothing I could do was going to stop it. I was fucking Jessica bareback, and I had no idea if she was on the pill or not. I thought about trying to ask her, but I knew I just didn't have enough time. I pulled out of her and turned slightly. As I grunted loudly, the cum from the first spurt went clear over the examining table and almost hit Katherine, who was still standing on stage watching us. The second spurt wasn't as powerful but still sent cum over the table, only the tail end of it landing on the opposite edge. I experienced four more spasms, all of it landing on the remains of the wax paper. I heard several gasps and whispers in the class, but I couldn't make out any specific words.

Jessica remained where she was as I tried to regain my breath. I noticed that she was rubbing her pussy with her left hand.

"Every single person who has ever lived on this planet owes his or her existence to the act we just witnessed, the male ejaculation," Katherine said stoically, as if she had rehearsed that line.

It was the most intense orgasm I had ever experienced. But it had happened far too soon. I took a quick glance at the class, wondering what they would think of me cumming so quickly, especially when Jessica was still fingering herself. She'd had what I thought was a small orgasm when I was licking her, but I wanted her to have more. And I sure as hell didn't want this experience to be over.

I sat on the floor with my back against the side of the examining table and scooted myself under Jessica. Reaching up with both hands, I grabbed her ass and pulled her pussy down to my mouth. She moved her hand just in time for my tongue to slide into her. I heard her gasp as I licked up and out, over her hard clit. With Jessica's left knee still up on the table, and still giving the class what had to be an incredible view of her cunt and my cunnilingus, I had to turn my head at an awkward angle to get my fingers into her. Licking her clit, I applied pressure with my fingers from inside her, directly against where I was licking. My tongue worked like a jackhammer on her clitoris, flicking back and forth as rapidly as I could make it, with my fingers fucking her, rhythmically hitting that spot again and again.

With a scream, Jessica tried to pull up and away, but my other hand was still holding her ass. I held her down, relentlessly licking and finger-fucking her until the deluge came. I don't watch a lot of porn, but I've seen enough to have come across the so-called squirters, girls who ejaculate when they orgasm. I didn't know if it was real or not; to me, it just looked like they were peeing. Once I got over the surprise of Jessica's pussy spraying into my mouth and face and splattering everywhere around us, I knew that it wasn't pee. There was only a salty sweetness to it without a hint of urine smell or taste.

"Fuck," she said.

I pulled back from her pussy, her fluid running out of my mouth, down my chin and chest. She looked unsteady, and I grabbed her and guided her to the floor.

"Sorry," she said softly to me, and I know she didn't want the class to hear. "I couldn't hold it."

"It's all right," I told her.

I saw a pillow in a cubby hole on the side of the examining table, under the end where our heads had lain. I grabbed it, and laid Jessica on the stage with the pillow under her head. My erection was back in force, and I positioned myself between Jessica's legs and entered her slowly. She looked at me with wide eyes, as if she were surprised that I would still want to fuck her after she had soaked me. She didn't resist though. I held my upper body above her with my arms, and with my knees on the hard floor of the stage, I started fucking her missionary style. She soon responded, and we were going at it. I took a brief glance at the class, and they were all still watching us in silence. Joan Jett girl was spread out in her desk, her arms hanging limply toward the floor, looking exhausted.

I knew my cock could last awhile now, but I didn't know how my knees would hold up. I lifted them from the floor, and with my arms still extended, I must have looked like I was about to do pushups. I used my hips to drive into Jessica with force. She was writhing in pleasure, moaning and breathing hard, and I knew another orgasm was coming. When it erupted, I felt the warm spray of fluid enveloping the middle of my body. In my peripheral vision, I saw several of the students on the front row react to the sprinkling of Jessica's juices as she and I continued fucking. Our bodies slapped together, the sound intensified by her fluid and our sweat, sending little showers in all directions around us. Every muscle in my body was tense, and I knew I either had to cum or sustain an injury. I fucked her harder and harder, and she must have felt my body getting ready.

"Cum in me," she said.

"Sure?" I managed to say between breaths.

She nodded. The only word she could say was, "Pill."

We came together, and the sensation of my cum shooting deep inside at the same time as another warm gush of fluid showering my belly was indescribable. Once I had finished, I collapsed on top of Jessica, using my knees and elbows on the floor to keep from crushing her. I kissed her and rolled off.

I couldn't move; I just lay on the stage, looking up at the black ceiling, soaked and spent and struggling for oxygen. Closing my eyes, I felt the weariness surge over me, my muscles still twitching. Jessica put her hand on my arm as she stood up, and I wondered how she could even move after that.

"As soon as our models get covered, I think we can break for lunch," Katherine said to the class.

I heard Jessica and Katherine exchange whispered words, but I couldn't hear what they were saying. And I didn't yet have the energy to try to get up.

"Dan?" Katherine said.

I opened my eyes and saw her standing over me.

"Are you OK?"

I looked out at the class. The students were all standing, waiting on me, I supposed.

"Yeah, I just needed a minute," I said.

"You need some help?" Katherine held her hand out, and I grabbed it and pulled myself up to a standing position.

I felt cold and sticky and more naked than I had felt up to that point. Katherine had my robe draped over her other arm. She handed it to me and helped me get it on.

"I brought some Wet Wipes for you to clean yourselves up with, but they seem rather inadequate now. And there's not a shower in this building."

"It's OK," I told her as the students filed by the stage. Each of them had been wearing something strapped to his or her upper arm, and they were dropping those things into a box at the corner of the stage. "What are those?" I asked.

"Monitors," Katherine replied. "For my research. Heart rate, etc."

Her tone was uncharacteristically terse, and I felt that she was somehow disappointed.

"I'm sorry," I said. "I kind of got carried away."

"That's OK. It was part of the plan, actually. I just... I didn't know..."

She paused and trailed off. "What?" I said.

"I was unprepared for that. That - display of raw sexuality. I've never seen anything like it."

"You're not disappointed, are you?"

"No," she replied. "I'm quite pleased with you and Jessica. I just had no idea." She stopped and straightened herself, seemed to regain her composure. "We'll have a lot to go over after lunch."

"Where's Jessica?" I asked, looking around and not seeing her. She and I had a lot to go over as well, I thought.

"She got dressed and left."

"She's gone?" I exclaimed. "When?"

"When you were sleeping."

"Sleeping? What?" I said.

"You feel asleep on the stage. "

I didn't quite believe her, but I supposed it was possible. "How long was I out?"

"About ten minutes. Several of the students thought it was quite funny. There were a few giggles as we tried to decide how to wake you."

I tried to imagine the students not knowing what to do while a naked man slept at the front of the class.

"Was she OK?" I asked, my thoughts returning to Jessica.

"Yes, I think you took care of her very well," Katherine replied with a laugh.

"No, I mean, was she upset or anything?" I couldn't believe that she would leave without saying a word to me, after what we had done together.

"I don't know. She's very hard to read."

I agreed with Katherine on that. Jessica was so beautiful, but she acted like she was a high school geek, shy, non-talkative, her head always buried in a science fiction book.

"So, I guess we're done?" I said.

"For today. I do want to get your feedback on what happened today. But right now, my focus is on the people who watched it." She gestured at the box with the monitors.

"OK." I started toward the supply closet where I had left my clothes, but I stopped before I got there and looked back at Katherine. "Thank you. This was amazing. It was amazing before Jessica and I... You know. The lecture, I mean. I'd love to do it again."

"Oh, I wish you could, but I'm afraid this was a one-time event. Unless I can get approval and funding for an expanded study, that is."

"Well, if you do..."

"Of course. You'll be the first person I call."

When I got into the supply room, I found an envelope on top of my street clothes. Inside the envelope was two hundred dollars in cash. Feeling physically tired and emotionally disappointed by Jessica's sudden disappearance, I got dressed. I didn't see Katherine again when I left.

Wearing Jessica's juices between my skin and my clothes on the way home was a turn on. I had an erection as soon as I walked into my apartment. I took a shower, letting the hot water massage my sore muscles. My neck was especially sore, and I hoped I hadn't strained something while eating Jessica from below. I also masturbated in the shower, marveling that I had both the energy and the semen to do so. I called Jessica's number when I got out, but it went straight to voice mail.

"Jessica, it's me. Dan," I said after the beep. I stuttered and wished I'd had a plan for what to say when I had called. "I got your number from the model list. Today was... Well, it was amazing, and I thought we could get together and talk about it. So... Give me a call."

I recited my number and disconnected. And I waited.

To Be Continued...



Class Demonstration Ch. 04



When Jessica hadn't returned my call after a week, I decided to try emailing her.

"Dear Jessica," I typed, "I had hoped to talk with you after what happened in Katherine's 'class,' but you left in such a hurry that I didn't get a chance. That was one of the most amazing experiences of my life, from Katherine's lecture to the delicious end. I would love to sit down with you over coffee or something and talk about it."

I had debated whether to ask her to dinner or not and decided that email was not the best communication method for that. Of course, since she wouldn't call me back, it was all I had. Coffee seemed to be a more casual suggestion, even though I didn't drink coffee. I typed my name as a signature and clicked Send.

I got a reply from Jessica that evening that said, simply, "I'd rather not talk about it. Jess." I sat at my computer, staring at the screen for several minutes before typing a reply. "Jessica: OK, how about we get together for coffee as friends and talk about something else?" I looked at that for several minutes, my mouse cursor hovering over the Send button before moving it, closing the message, and deleting it from my Drafts folder.

I couldn't imagine what her problem was. The sex was absolutely mind blowing, the best I'd ever had by a wide margin. There was a magical connection between us. Surely she had to have felt it too? Maybe she just needed some time to realize it.

The summer sessions began the following week. There are fewer drawing classes, so the teachers schedule their own models rather than have the model coordinator do it. I had made sure that each teacher had my contact information, and I was called to model on the second day of classes. It was a fun session with lots of short gesture poses, so I got to move around a lot. Late in the class, when I was settled into a twenty minute seated pose, my mind wandered to the last time I had been in that room, posing with Jessica and meeting Katherine. That led to thinking about the incredible experience in Katherine's sexuality research.

The sound of three or four female students coughing in tandem stirred me out of my reverie. I glanced down at myself and saw that I was almost erect. My penis had been lying against my thigh, but now it was trying to lift up in the air with each beat of my heart. Shit! I started thinking about baseball and how badly the Rangers were doing just a few years after their two World Series appearances. Two girls had smirks on their faces when I glanced at them. I looked around for the teacher, didn't see her, and hoped that she hadn't been in the room. My penis settled down, and I kept my thoughts away from Katherine and Jessica for the rest of the class.

"Great job," Kelly told me after the class ended when I had her sign my timesheet. "Can you come back Monday?"

"Sure," I replied, happy that my momentary erection hadn't cost me any bookings with her.

When I got back to the models' undressing/dressing room, I had a voice mail on my cell phone from a number I didn't recognize.

"Dan, this is Katherine Tate. I apologize for not getting back with you sooner, but I've been swamped with analyzing responses. I would love to have you come to my office and talk about your participation in my project. Please give me a call back so we can schedule something."

I dialed her number immediately, still in my robe.

"Katherine," I said after she answered. "This is Dan."

"Hi Dan, how are you?"

"I'm good. Sorry I missed your call. I just got out of a drawing class."

"That's OK. I was wondering if you had some time to talk."

"Sure." I wasn't taking any summer classes myself, so my schedule consisted of modeling during the day whenever I could get a gig and working at my job at the parts desk at Pep Boys three evenings a week.

"And actually, I have some time right now. Since you're already on campus."

"Sounds great," I said, eager to ask her about Jessica.

Katherine gave me the building and room number of her office, and I threw my clothes on, slung my bag over my shoulder, and made my way across campus. Her office was medium size with a small reception area for a secretary or student worker. That front desk was empty, so I went straight into her inner office. Katherine was studying something on her computer screen but looked up when I walked in.

"Dan, so nice to see you. That didn't take very long." She stood, stepped around her desk and gave me a hug, then motioned me to sit in the chair across from her desk.

"I walk fast when I'm going somewhere I want to go," I said with a smile.

We both sat, and she looked at me across her desk.

"I'm glad," she said. We said looking at each other in awkward silence before she continued. "Like I said, I wanted to do a follow up interview with you. What has it been, two weeks?"

"Almost."

Katherine looked down at some papers on her desk. "What did you think of the class?"

"It was amazing. I mean, well, you saw what happened. Jessica..." I struggled to find the words, but Katherine just nodded.

"Yes, the two of you were amazing together."

"Did you do a follow up with Jessica?"

"Yes, briefly. And it was only over the phone. She went back to Lubbock for the summer."

"She did?" I hadn't meant to sound so uninformed, but the words had just come out.

"Yes. Have you not talked with her?"

I shook my head. "I left her a voice mail, but she never returned the call."

"Hmmm. Well, she had some very mixed feelings about what happened. She was rather embarrassed. You do know that she thought she had peed on you?"

I shook my head again.

"Apparently, she didn't know about her special talent. It took you to bring that out in her. Let me tell you, the class and I had a long discussion on female ejaculation after lunch." She smiled and shook her head. "It was educational."

"It didn't mess up your study, did it?" I asked.

"Oh no. I got some amazing data back from those students. I am so grateful to you and Jessica."

"So you had wanted us to have sex then?"

"Oh yes. The major focus of my study was voyeurism, and people's reactions to seeing unexpected sexual acts. They knew they were going to see a demonstration of anatomy, but what you and Jessica did was a surprise to them."

"How did you know she and I would...you know?" I couldn't quite voice the words.

"Oh, I knew. I could tell by the way she responded to you on the model stand."

"Really?" I said. I hadn't sensed anything but stand-offishness from Jessica before Katherine's class.

"Oh yes." Katherine smiled at me. "The main question I have is, would you do a class like that again?"

"Absolutely," I said without hesitation.

"Even just the first part, the anatomy lecture?"

I thought about how stimulating it was to stand naked in front of those students sporting a full erection. "Sure."

"Even if you were the only model there? No female; just you."

"Sure," I repeated.

"Would you do it for your regular modeling rate? What is it, twenty an hour?"

It was actually fifteen an hour at this particular university, although I knew that other schools paid twenty. I thought about the two hundred she had paid me for that session, and how I had felt like I was stealing. Nothing that fun should pay that much, I had thought. I shrugged and said, "Yeah."

"With an erection?"

"That was part of the deal."

Katherine nodded. "Would you masturbate for the class if I needed you to show them an ejaculation?"

I thought about that first meeting with Katherine, how she had suggested that very thing after she had seen me nude on the model stand in that art class. Just talking about it now had me straining against the fly of my pants. "Whatever you wanted," I said, and I immediately thought I sounded far too submissive.

Katherine smiled. "You just came from an art class. Do you ever need to masturbate after a class?"

I shrugged, not wanting to admit anything to her. But honestly, it was quite often that I popped one off right after getting home after a class. There was nothing sexual in the class, but once it was over, thinking about the girls in class studying my cock and balls often got me worked up.

"Do you know why I spent so much time and effort doing a study on sexual voyeurism?" she asked me.

"I don't know. It was something you could get funding for, I guess."

Katherine laughed. "Do you know how hard I had to work to get the funding I did get? No, this study interests me because I am a sexual voyeur. Ever since I was a little girl, when I found my dad's stash of porn. Magazines, VHS, whatever. Watching has always fascinated me."

It only made sense that professors would study what interests them, especially if that interest affected them personally. But I couldn't figure out why she was telling me this.

"You are obviously an exhibitionist," she continued. "And I'm a voyeur. And you need a release after your art classes."

"What are you saying?" I asked, but I was starting to get the picture.

"I'm saying that I'm here. Whenever you get out of an art class, I want you to come here, to my office, and give me a show."

"Seriously?"

She nodded. "Why don't you close the door."

I stood, turned, and shut her door. Knowing what I was about to do, I would have liked to have locked it, but there was only a deadbolt that required a key to lock.

"You sure this is OK?" I said, unbuttoning my pants.

Katherine nodded, shifting in her seat, making herself more comfortable.

I unzipped and pushed my pants down to my knees. I didn't wear underwear on days that I modeled so students wouldn't have to see red marks around my waist during the early poses of the class. My erection sprang forth and bobbed in front of me.

"Take everything off," Katherine ordered. "Just dropping your pants seems crude. And I like to look at your body."

I kicked off my shoes, pulled my shirt over my head, and stepped out of my jeans. The novelty of being naked in a faculty member's office was a new sensation. I had never masturbated in front of anyone, and with nervous excitement, I took my erection in my hand and slowly caressed it up and down. Katherine smiled as she watched.

"Mmmmm," she said. "I like you starting out slow. You have such a beautiful penis."

Her use of the word penis rather than dick or cock was a turn on, highlighting the fact that I was naked and playing with myself in front of a proper fully-tenured university professor. I started stroking a little faster and used my other hand to tickle my balls. Katherine unbuttoned the top button of her blouse, her forearms rubbing against her breasts. She stopped at that one button however, and put her hands in her lap. Her gaze never left my cock, and I couldn't believe that she was just going to sit there and watch.

"Do you want to touch it?" I asked.

"You'd like that wouldn't you? Yes, I want to touch, but I'm not going to."

"Why not?" I asked between breaths.

"I can't. And I just want to watch. I want to see it come again."

I quickened my pace, and Katherine pulled two tissues from the box on her desk. She stood and held them in front of me, but I didn't take them. She could at least catch the cum for me. My muscles tightened as my arm pumped and pumped, and Katherine could tell that I was just about there because she lowered the tissues so that they were right in front of my cock. Just before the first convulsion hit me, I reached out with my left hand and grabbed hers, guiding the tissues so that they caught the first spurt.

"Ohhh," Katherine shuddered. I let go of her hand, and she caught the remaining spurts, most of the cum hitting the tissue. There was one stray string that landed on her finger. Once I was done, she dabbed at the tip of my cock with the wadded up tissue and threw it in the trash can beside her desk. She then, very slowly, licked the remaining semen off her finger, her tongue between her teeth, before sucking it in and swallowing.

"That was nice," she purred.

"It hit the spot," I agreed.

Without taking her gaze from my deflating cock, she sat back down at her desk. I started to bend down to get my clothes, but she stopped me.

"No, don't. I want to watch it go down. It looks so nice hanging there like that, still big. You were so hard through most of my class."

I stood and let her watch, but I didn't think I could stay there for very long without getting another erection. As much as I wanted her to touch me and as much as I wanted to touch her, standing there, naked, in front of her while she was still fully dressed was so hot. I wondered what it would be like to be her personal naked slave, and the thought sent a chill down my spine and my cock.

"So you'll do this for me on a regular basis?" she asked.

"Sure," I said, but I felt like saying, "HELL FUCKING YES!"

"Good. When is your next modeling class?"

"I have a one to five tomorrow and an eight to twelve on Monday," I said. Summer classes were four hours long instead of the usual three. "But I usually get out a bit early."

"What time do you think you can be here tomorrow?"

"4:45."

"Nice. I'll be waiting. You should probably get dressed now."

I disagreed since I was on my way to another erection, but I complied. Once I was fully dressed, Katherine got up and walked me out.

"Thank you," I said.

"No, thank you. I enjoyed that almost as much as you did."

"I doubt that," I said with a smile.

Katherine offered her hand and we shook like we were closing a business transaction, something that was probably more of a turn on than a kiss would have been.

Drawing class the next afternoon was another of the fun ones with a lot of short action gestures and ending with a forty-five minute reclining pose. My thoughts during that last pose returned to Jessica, home in Lubbock for the summer. At least I could quit looking for her on campus. I was anxious to know her true feelings about that sexuality project and about me, and I worried that the time apart would make those feelings, if there were any, fade. I also wondered about my relationship with Katherine. What did she want from me? Would our arrangement ever move beyond me masturbating for her? I decided that I was OK if it didn't. I wanted a shot with Jessica, so I was hesitant to do anything that might jeopardize that. I wasn't showing Katherine anything she hadn't seen before. Besides that, she was about twenty years older than I was, and I didn't see any kind of a long term relationship sprouting from that.

Jose, the instructor, called an end to the pose and the class at 4:30, and I got my timesheet signed, rushed to the changing room, threw my clothes on, and jogged to Katherine's office. I was surprised to see a girl sitting at the desk outside Katherine's office. She smiled as I walked in.

"May I help you?" she asked. Her red hair and green eyes were striking, and her face was covered with freckles.

"I'm here to see Dr. Tate," I said. "I should have an appointment."

"Dan," Katherine called to me from within her office. "That's all right Amber; he can come on in."

Amber smiled and motioned me into Katherine's office. I closed the door behind me.

"Hi, how are you?" I said, but Katherine just shook her head.

"Don't talk. Just do it. I think it's better if we don't talk."

I shrugged and pulled my t-shirt off over my head. My cock was already hard, and it sprang forth when I slipped my jeans past my hips. Katherine's eyes seemed to sparkle when she saw it. She slowly pushed the box of tissues on her desk to the edge so that it would be within easy reach. I got my pants off and pushed them to the corner behind me. Grasping my cock with my thumb and forefinger close to the base, I waved it at Katherine. She smiled and stifled a laugh. I spread my legs apart, standing at the side of her desk, and started stroking my cock.

"Slow," Katherine whispered. "Don't start so fast."

I slowed down, stopping at the base between strokes so Katherine could see the entire length of my cock.

"Yes," she whispered.

Katherine's tongue caressed her upper lip as my strokes got progressively faster. I thought of Amber outside, her piercing green eyes, and wondered if she had any idea what was going on just on the other side of the door behind me and to my left. Katherine's hand moved down to her lap, and she adjusted herself in her seat. I couldn't see, but I imagined her fingers curling into her pussy through her clothes. I wondered what it looked like, what she looked like.

I was just starting to get into a fast pace, one which would lead to an orgasm, when there was a loud knock on the door. I stopped instinctively, but Katherine said, "Come in," without hesitation.

The door opened as I tried to push my cock down between my legs and bend down into a crouch. What the hell was Katherine thinking?

Amber sauntered into the office with a stack of papers.

"Here are those graded tests," she said.

"Thank you Amber." Katherine looked back at me and said, "Don't stop."

"But," I stammered, but Katherine's upraised palm stopped me.

Amber turned and stared, her eyes wide. She grinned as I stood up straight again, my hand still on my cock. Katherine motioned for me to keep going. Amber stood where she was but raised a hand to her mouth. I started stroking again, slowly, like I had done before. The door was still open, and it didn't look like Amber was going to leave, so I pushed it shut with my other hand.

"Isn't he gorgeous?" Katherine said. "His penis is the prettiest one I've ever seen."

"It is," Amber agreed. She moved her hand from her mouth and pressed her arm against her breast. If she had been shirtless, she could have been trying to hide them from me. And then the vision of a shirtless Amber pushed everything out of my mind. I stroked faster and faster until I could feel my blood pumping behind my eardrums. With a grunt, I reached out with my other hand, yanked a tissue out of the box, and unleased what felt like a massive spray of semen into it. Amber and Katherine both seemed to jump in reaction. I kept spurting into the tissue with each beat of my heart, two, three, four, five. I struggled for air as my reservoir of sperm was depleted.

"Wow," Amber said, pulling her gaze away from me and looking at Katherine. "You were serious."

Katherine nodded, a smug look on her face.

"Thank you Amber. That will be all."

Amber looked back at me, smiled sheepishly, and scurried out of the office.

I stood in Katherine's office, naked, as I caught my breath. "I didn't think you would mind," she said.

I shook my head. "Thanks," was all I could manage to say.

To be continued...



Class Demonstration Ch. 05



I averaged two art classes per week during the two 5-week summer sessions. Going to Katherine's office after each class became my regular routine. I kept her updated on my schedule, and, except for two days in early July, she was always there when I arrived. I would strip completely and masturbate to completion for her just as I had done those first two times. If Amber was working for her at the time, she would always come in and watch as well. 

The second summer session was ending the first week of August. I did a long pose for a beginning figure drawing class, knowing that it was my last modeling gig until the fall semester started up. When it ended, I took some extra time on the platform to stretch my numb legs. I caught one of the girls watching me massage my thigh, the motion of which caused my cock to bounce just a bit. We smiled at each other, and she went about her business of packing up her drawing materials. It felt so good to be naked and free. I love my modeling job, I thought to myself. It would be another three weeks before I got another chance to model, but I took solace in the hope that I would see Jessica soon. Surely, she had gone home just for the summer and that she would resume her classes in the fall.

As I walked across campus after class, I relived my experience with Jessica in Katherine's Human Sexuality research project, how she looked, how she tasted, how she felt, so that by the time I reached Katherine's office, I had a throbbing erection straining to get out of my shorts. Amber's spot was vacant, and I felt some disappointment. I had grown to love masturbating with her in Katherine's office. It was great with just Katherine, but the fact that she and I were alone together made it more intimate. With Amber, I felt more like a performer, and I wondered what it would have been like to masturbate in front of that whole class. Of course, the sex with Jessica was exponentially better than mere masturbation would have been.

Katherine looked up wordlessly when I entered. Each meeting had featured fewer and fewer words between us. I closed the door and immediately stripped off my clothes. My erection popped out and bobbed up and down as I removed my denim shorts. Katherine's eyes, as always, sparkled as she watched. I took my cock in my hand and gave a few long, slow strokes. A drop of pre-cum emerged, and I used that to lube myself for the faster stroking. Katherine leaned back, put one hand behind her head and kept the other one in her lap. I stroked progressively faster until I exploded into one of Katherine's tissues.

"Bravo!" Katherine said as I tried to regain my breath.

"Thank you," I said.

"You are most welcome."

I threw the tissue away and started getting dressed.

"Are you busy Saturday?" Katherine asked.

"No, not so far," I replied.

"I'm throwing a big end of summer party at my house, and I'd love for you to come."

Katherine and I had always avoided any talk of a personal nature, so I had never even wondered what her house was like. But now that she had mentioned it, I was curious.

"Who all is going to be there?" I asked.

"A lot of people from the psychology department. Students and faculty. And some of my patrons—the ones who helped fund my study. I know a few of them would love to meet you."

I nodded and said, "OK."

"Wonderful!" She grabbed a card from her desk and wrote her address on the back. "Party starts at 4:00, but feel free to come early or late."

I took the card from her, glancing at the address but not recognizing the name of the street.

"Do I need to bring anything?" I asked.

"No, no, just your wonderful self."

"OK." I stood in her office for a moment, fully clothed and feeling somewhat sad that the summer classes had ended. "Thank you for this summer," I finally managed.

"Thank you, Dan. I enjoyed it as much as you did. The fall semester is a lot busier than the summer, so it might be difficult for you to get in. But maybe a few times though..."

I nodded and said, "All right. Well, I'll see you Saturday."

"Good. I look forward to it."

I left, and the first thing I did when I got home was look up Katherine's address on Google Maps. Using the street view, it looked to be in an average middle class neighborhood.

I worked at my parts desk job on Thursday and Friday evenings, but my thoughts kept straying to the party. How many people would be there? And what would they be wearing? That got me wondering what I should wear. Four o'clock seemed early to be starting a formal party, and it was Texas in August. Surely casual shorts and a polo shirt would be appropriate in what would probably be one hundred degree weather. 

I'm almost always early everywhere I go, but I didn't want to be the first person at the party. So I forced myself to wait until 4:00 before leaving my apartment and arrived at Katherine's house at twenty after. There were quite a few cars parked on the street, and I wound up having to park about a block away. The nervous jittery feelings started as I walked to her front door. I never liked being in crowds of people, especially people I don't know. I'm basically an introvert, and one of the advantages of modeling for art classes (besides getting to be naked) is that I get to spend three hours inside just my own head.

There was a note taped to Katherine's front door that said, "We are in the back. Please use the gate on the left side of the house and let yourself in." I could hear the sound of laughter and splashing as I walked around to Katherine's back yard. She hadn't said anything about this being a pool party, and there had been no pool on the satellite view of her house on Google. But a pool there was, and, for a residential pool, it was pretty big. Twenty or so people sat or milled about on the patio, and I counted six in the pool. A tall middle aged man was grilling burgers and hot dogs. I stopped and took in the scene for a minute or two before I heard Katherine calling my name.

"Dan, there you are," she said, rushing forward, taking my arm, and leading me toward the patio. "I'm so glad you could make it."

"Me too," I said, although I wasn't too sure about that.

"I want to introduce you to some people." Katherine led me to the man at the grill. "Gene," she said to him, "this is Dan. Dan, this is my husband Gene."

He set his tongs down and held out his hand.

"Good to meet you," he said as we shook. "Katherine's told me a lot about you."

"She has?" I said, still reeling from the revelation that Katherine was married. Why hadn't she ever mentioned that any of the dozen or so times I had jacked off for her?

"Oh yes. This research project is a big deal for her, and you helped her out greatly." Gene finally let go of my hand and resumed his grilling. "You make yourself at home."

"Thank you," I replied.

I saw Amber sitting by the pool as Katherine introduced me to three couples. Two of the ladies were presidents of a couple of different foundations, but I forgot which as soon as Katherine told me. Amber gave me a little wave when she and I saw each other, but she didn't get up. Guests were still arriving, and they seemed to be evenly split between college aged psychology students and older, middle aged academic types. Once Katherine finished introducing me to whomever she considered VIPs, she told me to enjoy myself and to feel free to get in the pool.

"I didn't know this was going to be a pool party," I said.

"Oh yeah. We just had that installed over the winter, and I love it," Katherine boasted.

"But I didn't bring a bathing suit."

Katherine shrugged and said, "You don't need one."

"Well, I'd rather not have to wear wet clothes home."

"So take them off silly," she said and laughed.

I scanned the still gathering crowd and noticed that all of them were conservatively dressed. One girl in the pool had on a rather skimpy bikini; the rest wore one piece bathing suits, with the guys wearing full swim trunks. I did a quick count and out of about thirty people, twenty of them were female.

"You know you want to," Katherine said.

"Is this an experiment?" I asked.

"Maybe."

"Nobody will freak out?"

"Oh, they know me and know the kind of research I've been doing. The sight of an attractive naked man shouldn't faze them. Some of them may even like it."

I couldn't believe I was really thinking about doing this. And I also couldn't believe that I found the thought of it exciting.

"Do you have a towel?" I asked.

"They're on the cart by the back door. Here, I'll show where to change and leave your clothes."

I followed Katherine into the house, grabbing a towel off the cart as we went inside. The back door opened into the breakfast area by the kitchen, which was decorated in a wine/grapevine motif. There was a collection of unopened wine bottles on the bar overlooking a living area. Katherine led me to the right and into the master bedroom.

"You can change here," she said. "Just leave your clothes on the bed."

"You're sure this is OK?" I said as she started to leave.

"Of course. It's my house and my party."

She smiled and closed the door. I threw the towel on the bed and started undressing, looking at the photos on the wall as I did so. One of them featured a much younger Katherine and Gene along with two teenage boys. I wondered how old the boys were now. I stood naked in Katherine's room for a couple of minutes, enjoying the feeling of freedom that I always felt whenever I took my clothes off. I wrapped the towel around my waist, made sure it wouldn't fall off, and headed back toward the pool.

Another six people had shown up, all of them college students. Two of the girls were removing their outer clothes next to a lounge chair, but even they had one piece bathing suits on under those clothes. I caught Katherine's eye as she talked to one of the VIP couples. She motioned for me to get into the pool with her fingers. I nodded and slowly made my way to an empty chair close to the deep end. I stood beside it for a moment and took a look around. No one besides Katherine seemed to be paying any attention to me. I took a deep breath, took the towel off, and set it on the chair. Feeling vulnerable and very naked, I immediately stepped off and into the pool, splashing as I submerged into nine feet of water. The pool felt good on a hot day, and the sensation of being naked instead of bogged down by a bulky swim suit was exquisite. I swam underwater for a few seconds before coming up and grabbing onto the side of the pool. I looked around, curious about the reaction to my display. Everyone was still talking and laughing as they had done before. Katherine saw me and winked. I gave her a discrete wave back.

"Hi," a voice behind me said.

I turned and saw the girl in the skimpy bikini treading water beside me. She had shoulder length dark brown hair and striking green eyes. I knew I had seen her before, but I couldn't place where.

"Hi," I said. "How are you?"

"I'm good." She moved to the edge and grabbed hold of the concrete lip. "My name is Liz."

"I'm Dan. Good to meet you."

We stared at each other in silence for a few seconds. She was thin, with small pointy breasts. The top of her swimsuit seemed to be just a tad too large, and I thought that if I watched her long enough, I would see a glimpse of nipple in the gaps.

"I was in Dr. Tate's research group," she finally said.

"Oh?" And then, when I realized what she meant, I said, "Ohhh."

"Yeah." Liz smiled sheepishly and looked around. "Is she here? Your girlfriend?"

"Jessica? No, she's not my girlfriend."

"She's not? Why not? What you did to her was... Fuck, it was amazing."

"She went home for the summer."

"Is she coming back?"

"I don't know," I said. "I hope so."

We floated at the edge of the pool, holding on to the edge, gazing at each other.

"That was the most amazing thing I've ever seen," she finally said.

"Thank you." I didn't know what else to say.

"I wished that could have been me."

Then it hit me who she was. "You were wearing a Joan Jett t-shirt."

"Yeah. You remember me?"

"Oh yeah," I said with a smile.

Liz blushed and looked away again. Then she looked down in the water at me.

"You're naked."

"Yeah," I said.

She laughed. "Wow. You have no fear, do you?"

"No, I do. It feels weird being the only naked person here. I think Katherine - Dr. Tate - set me up."

Liz laughed again. "Do you want to be the only naked person here?"

"Well, not really. I like being naked, but being the only one seems..." I couldn't find the words for a few seconds. "Weird."

"Well, I could get naked too. If you wanted. I just, I think you're awfully brave, and if you want some support, I'd like to, you know..."

I remembered her reactions to mine and Jessica's display in Katherine's class, seeing and hearing her get herself off. The memory of it was enough to get my blood pumping. Liz looked down at me in the water again and smiled.

"I think you like that idea," she said, reaching behind her head and untying her bikini top. She removed it and tossed it up on the chair where I had left my towel. I looked at her breasts and saw that her small nipples had contracted into little erect points. But I didn't get a chance to look at them long before she bent down and slipped her bottoms off under water and flipped them up onto the chair too.

"There," she said. "Now you shouldn't feel so weird."

I smiled, gazing at her body in the water. I couldn't see any pubic hair, but it was difficult to see for sure.

"Now, if we really wanted to be brave, we would get out and go get ourselves something to eat," I joked.

"I'll go if you go."

I looked down and saw that I still had an erection. "I don't know if I should get out like this."

Liz smiled, gazing at me. "You have a beautiful cock."

Her talking about it wasn't going to help me, but I smiled and said, "Thank you."

"Can I touch it?"

Even though we had just met, I felt an excitement being with Liz. I knew part of that was the experience at Katherine's class, but she was also very pretty, with the sexiest green eyes I had ever seen.

"Sure," I said.

Liz touched the tip of my cock and slowly ran her fingertips down the top, stopping at the base. She then moved her fingers down and forward, finally grasping my entire dick. Her touch was soft and smooth. I looked around at the party guests, talking and drinking and eating. No one seemed to notice what we were doing.

"You like that?" Liz said.

"Yeah."

"Do you want to touch me?"

"Yes," I said, "but I wouldn't be able to stop myself if I did."

Liz floated closer to me, moving her hips forward and brushing her pubic mound with the tip of my cock. "Maybe I wouldn't want you to stop," she said.

"But we just met."

"So? To tell you the truth, I've thought about you a lot the past two and a half months."

I was about to say something else when I heard Katherine's voice.

"Dan. Liz. I see you two have met."

Liz let go of my cock and floated away just a bit. We both looked up at Katherine standing by the side of the pool.

"That's wonderful," Katherine continued. "There's somebody else I'd like you to meet."

Liz and I looked at each other, and Katherine added, "Both of you."

We shrugged.

"OK," I said.

I grabbed the side of the pool and pushed myself up and out, my still semi-hard cock bouncing in the sunshine. I turned grasped Liz's hand and helped her out of the pool. She had a big grin on her face as we stood up and looked at the party guests, most of whom were now watching us. Being wet and naked in the Texas heat felt wonderful and free and exciting.

"She's over here," Katherine said and led us toward the patio.

Trying to be gallant, I waited for Liz before following behind her.

Liz was completely shaved or waxed, with small but lean muscular legs and a tight round ass. I took pleasure in watching her naked buttocks as she walked. The two dimples in her lower back just above her ass were amazingly sexy.

"Michelle," Katherine said to a thirtyish blonde drinking from a frozen margarita, "this is Dan, the male subject in the study."

Michelle smiled and me and looked straight at my swinging semi-hard cock as I walked up to her.

"Very pleased to meet you," she said, offering her hand.

I hesitated for just an instant before shaking her hand. "Sorry, I'm wet from the pool."

"That's quite all right," she replied. Her gaze remained on my dick which got harder the longer she looked at it.

"And this is Liz," Katherine continued. "She was one of the voyeur subjects."

Michelle glanced away from my cock for just long enough to acknowledge Liz.

"A pleasure," she said to her.

"Nice to meet you," Liz said with a smile.

I looked around and noticed that most people were looking at Liz's naked body, and from her grin, she seemed to love the attention.

"I wish I could have been there," Michelle mused.

"Well, your generous contribution helped make it happen," Katherine said.

"Yes, well, it is wonderful to see Dan in the flesh. So to speak." Michelle and Katherine looked at each other and laughed.

"Thank you," I said. My cock was completely hard now.

"Would you do something for me?" Michelle asked.

I shrugged. "Depends on what it is."

Michelle blushed and looked at Katherine, then at the rest of the guests who had all gathered around and were watching us.

"Would you do some jumping jacks?"

"Jumping jacks?" I said.

Michelle nodded. I looked around at everyone. Liz had a smirk on her face. She stepped aside to give me room.

"OK," I said, and started jumping, my hands going above my head with each jump. My cock bounced and slapped against my belly with each repetition, and I heard people laughing. Michelle squealed with delight.

"That's amazing," she said.

People were counting now, so I kept jumping, stopping when I got to thirty.

"Thank you," Michelle said once I had caught my breath. "Thanks for being a good sport. It was very nice to meet you."

"Nice to meet you too," I said.

Michelle turned to Katherine, and they both laughed as they walked into the house. Liz stepped over to me gazing at my hard cock.

"It's never going to go down with you looking at it like that," I said, shaking my head.

"Sorry," she said, but she didn't stop looking.

"Are you hungry?"

"Oh yeah," she replied.

"Well then," I took her hand and led her to the grill.

Gene was grinning when we arrived.

"Now I see what Katherine sees in you," he said with a laugh.

I probably blushed, but I let it slide. Liz and I made ourselves burgers, and we found a pair of chairs by the side of the pool where we could eat them.

"Are you a student?" I asked Liz.

"Oh yeah. Psychology major. We all were. All of us in that class that you did."

"I didn't realize I did the class. I thought I just did Jessica."

Liz laughed. "Jessica. That was her name."

"Yeah."

"I know she had fun."

I shrugged. "I wouldn't know. I haven't seen her since that class."

"Really? Damn, I would have gone home with you after that."

"Well, Jessica is a complex girl."

Liz took a bite of her burger and said, "I'm a complex girl too. But damn, that was hot. I can't believe she didn't want some more of that," Liz said, motioning to my cock which, thankfully, had finally lost its erect state.

Just talking with Liz made me question my entire thoughts about trying to start some kind of relationship with Jessica. How could she have just walked away from Katherine's sexuality research, from me, without a single word after what had happened?

"So what did you really think of Katherine's presentation?" I asked.

Liz looked at me for quite a long time as a smile slowly formed on her face. "It was amazing. You looked so hot, and when you put your mouth on Jessica, down there, after you came...oh my God. I wanted that to be me. Even in front of all those people. Especially in front of all those people. I guess that makes me more of an exhibitionist than a voyeur."




Class Demonstration Ch. 05



I looked around at the party and saw that it had returned to something close to normal. Liz and I were no longer the centers of attention, although we did get a few glances our way. We were still the only two naked people there though.

"Do you think I'm sexy?" Liz asked, and she leaned back in her chair, straightening her legs so that I could see all of her. Her breasts were still perky with small, hard nipples; her belly was flat with a small ring piercing her belly button; her pussy was smooth and soft with a hint of pink inner labia poking out between the folds of her slit; and her legs were strong and muscular.

"Oh yeah," I said. 

"Sexy enough to model for the art classes you do?"

"Sure," I replied after swallowing a bite of my hamburger. "But you don't have to be sexy to model for those classes. They like a wide variety of body types. And they try to keep sex out of those classes."

"I was thinking about signing up," Liz said. "After seeing you and Jessica."

"Rhia is the model coordinator. Remind me, and I'll give you her number."

"Cool."

We ate and talked about nothing important. I enjoyed looking at Liz's body, but even more than that, I loved catching her looking at my cock. Whenever I did catch her, she would run the tip of her tongue along her upper teeth. We started talking about the different guests at the party, laughing whenever one of us said something funny.

"It's nice to see you two getting along," Katherine said as she approached us.

"Yeah," I said. "Liz is awesome."

Liz blushed when I said that.

"It's really nice of you to be naked and vulnerable like Dan is," Katherine said to her.

"Well, I didn't want him to have all the fun."

"Speaking of fun, please feel free to have as much as you want."

Katherine gave me a little wink and strode off to another group of guests.

"What was that supposed to mean?" I asked.

"I think she wants us to do it and give her guests a show," Liz said.

I nearly choked on my last bite of burger as Liz said this. I took a drink and got the burger swallowed.

"I've had her for two semesters," Liz continued, "and she's very... provocative."

From my more limited experience with Katherine, I had to agree. She had certainly encouraged Jessica and me in her big presentation.

"How can we tell for sure?" I asked.

Liz scooted her butt forward in her chair and spread her legs. "You could go down on me and see what she does."

"Right here?"

"And right now," Liz finished.

"She didn't put you up to this?" I asked, remembering how Katherine and Jessica seemed to have shared secrets about the full extent of her sexuality research. 

"No, this is my idea. Come on."

Liz raised up, pulled the chair cushion out from under herself and dropped it on the pool deck between her feet. I took a look around at the rest of the party. Several of them had noticed Liz's spread legs and were looking at us. I looked back at Liz's delicious looking pussy, her pink labia fully visible now.

"Diver down," I whispered and dropped to my knees on the cushion.

To be continued...



Class Demonstration Ch. 06



A hush fell over the party and its more than thirty guests as I knelt on the cushion in front of Liz. She was sitting in a lawn chair, naked with her legs spread apart, the skin of her smoothly shaven pubic mound glowing in the light from the evening sun. I caught a glimpse of Katherine Tate, wearing khaki shorts and a casual blouse, watching us with anticipation, a smile on her face. I was reminded of how she had invited me here without telling me that it was a pool party and then, once I was here, inviting me to swim naked in the pool. And there I was, naked in front of a crowd of people. And then I had met Liz, the girl who had worn a Joan Jett t-shirt to Katherine's sex research study, who graciously took off her bikini so that I wouldn't feel so alone as the only naked person here.

I enjoyed the exposure though. I have to admit that I am a blatant exhibitionist. It's why I model nude for art classes and why I allow Katherine Tate to expose me, both for her research and for her own voyeuristic pleasure. And now, after hints by Katherine and a blatant suggestion by Liz, I was kneeling down to perform cunnilingus on Liz in front of an audience of college professors, students, and benefactors. As I caressed the inside of Liz's thighs with my hands, I briefly wondered if they had had any clue about what they might witness as they were preparing to come to this party.

Liz purred with pleasure through her closed lips as my fingers skimmed over the delicate folds of her pussy. A small bud of pink inner labia was poking out between the outer lips of Liz's vulva, as if it were trying to escape, and on this pink bud was a drop of wetness. I leaned forward and just barely touched the tip of my tongue to this escaping pink bud, inhaling the drop of liquid into my mouth. Liz lifted her butt toward me, pressing her pink flesh into my tongue. I heard a gasp from one of the people gathered around watching us. I held my tongue steady, letting it penetrate between the pink labia as Liz pushed her pussy toward my face. Wanting to make this last awhile, I pushed back on the insides of her thighs, pushing her back into her seat, as I pulled my mouth away. She squirmed on the chair, and I looked up to see a slight pout on her lips.

"Not so fast," I said.

I think I could have broken rocks with my cock, it was so hard. Wanting to show it off a bit, I stood up on my knees and let it brush against Liz's lower leg. She responded by lifting her leg and caressing my erection with her foot. While she did this, I used my thumbs to spread the outer lips of her pussy open. Several people shuffled forward a bit, straining to see. I moved my right thumb up to her clitoral hood, pulling it back to reveal Liz's clit. She sucked in a breath as the breeze hit her exposed nerves. After taking a quick look around and confirming that everyone at Katherine's party had their attention focused on Liz's vulva, I looked back at Liz and made a show of licking my upper lip. Slowly, I leaned back down, blowing air on Liz's clit as my mouth approached. My entire mouth settled on her pubic mound, my lips encompassing her cunt, and I started licking her clit in earnest, putting one hand under her ass for support and penetrating her with the fingers of my other. I got three fingers in, pushing upward, seeming to push against the inside of the area I was attacking with my tongue. Liz squirmed and convulsed, moaning with pleasure. Her breathing increased until she let go with a scream. Her vagina tightened around my fingers as the orgasm racked her body. She settled down into the lawn chair after a few convulsions. I removed my fingers, but I licked her labia as she came down from the height of her orgasm. I could pick up snippets of conversation from the crowd both while she came and afterward, all of them in appreciation.

I took a deep breath in, savoring the aroma of Liz's pussy. I used my forefinger to tweak her clit again and again until Liz resumed her squirming. Sensing another orgasm, I dove back in, licking and sucking her, enjoying the power of the pleasure I was able to give her. Her pussy was so smooth and soft that I could lose myself in her, my mouth on her most intimate parts, slathering her with orgasm after orgasm. Liz came again, her legs stiffening. She wrapped them around my back as I continued licking and sucking her. My hands caressed her hips, savoring the curve of her pelvis. Liz screamed and convulsed, her legs pulling me in tight before letting me go. She pulled back, pushing me away with her hands on my forehead.

"Hold on," she managed between breaths.

I was smiling at her, enjoying her dishevelment after her orgasms. She lay back on the lawn chair, catching her breath, as my fingers traced circles on her inner thighs, getting closer and closer to her pussy again.

"Wow," she finally said.

"Wow," several people around the pool said in agreement.

I was still smiling, almost laughing, as my fingers skimmed over her outer labia.

"Oh no," she said, leaning forward and pulling me up by my shoulders. "Stand," she said.

I complied, my erection bobbing in front of me, seeming to defy gravity. Liz grabbed the base of it and plunged her mouth onto it, deep throating me in one motion. The feeling was exquisite, the warm wet tightness of her throat. She rocked back and forth, fucking me with her mouth, her teeth grazing over my shaft and the ridge of my glans. As good as what she was doing felt, I knew I wasn't going to be able to come from just her mouth. I had never in my life come from just a blow job. But Liz gamely kept going, moving her head faster and faster until I thought she might strain a muscle in her neck or jaw. Finally she pulled me out and started using her hand, pumping me hard and fast until I could feel the coil compressing deep in my core.

"Come on," Liz said. "Come in my face."

She licked the underside of the head of my cock as her arm pumped me. My muscles all tensed, my knees locked, and I knew it was about to explode.

"Here I come," I said in warning to her.

She opened her mouth but kept pumping me with her hand. I yelled as I exploded in front of her. The first burst of come hit her chin. The second went into her mouth, and I thought she might gag from the force of the semen hitting the back of her throat. But instead of gagging, she wrapped her mouth around my cock and took the rest of my orgasm into her, swallowing when she leaned back, my cock popping out of her mouth.

There was a brief moment of awed silence before the applause broke out. Liz and I both looked at each other and smiled. She wiped the cum off her chin with her hand and licked it off, an action that excited me into a near erection so soon after coming. I sighed, and she sighed with me. 

"That was awesome," I said to her.

"Yes it was," a guy a few feet away said. There was a murmur of agreement from almost everyone else at the party.

Liz smiled and stood up, my cock still in her hand. She turned, took the towel from the back of the chair, and proceeded to wipe the end of my cock with it. I grabbed the other end of it and wiped her face.

"Thank you," she said.

"No, thank you."

Once we had wiped each other off, we jumped back into the pool. The party seemed to resume as normal, with people mingling and conversing. Liz and I held onto the side of the pool, floating and talking about trivial things. She told me that she had fantasized about something like this ever since seeing me and Jessica in Katherine's research project. The reminder of Jessica made me glad that Liz and I had only engaged in oral sex and hadn't progressed to full intercourse. I liked Liz a lot, but at that point, I didn't want to do anything that would jeopardize a future relationship with Jessica, assuming she came back to school from summer vacation.

Still, Liz and I had a great time. We both stayed naked until well after midnight. What's even more surprising is that we were the only people to get naked the whole evening. Once we got dressed, I walked her to her car and wished her a good night. I felt sad having to say good bye to her. We had discovered that we liked the same movies and books, that we had both been to the local edition of Comic-Con, and that we were both big baseball fans. She and I exchanged phone numbers, but I was still emotionally invested in Jessica after our sexual encounter in Katherine's demonstration. I didn't want to turn my back on that.

The fall semester started two weeks later, and my first modeling gig was on the third day of classes. Rhia, the model coordinator, emailed me the list of models for the term. Jessica's name was absent, but Liz was there. I smiled, knowing that I had helped inspire her to sign up.

My first class was a blast, with a lot of short poses, and a couple of teacher demonstrations. I'm used to being nude in a pose with everyone in the room drawing me, but it's a different feeling when only one person is drawing and everyone else is watching and waiting. I feel like I'm on display and under scrutiny. I like it, and I find it difficult to keep myself completely flaccid when a whole class, a majority of which is female, is just standing and watching me.

Liz was in the changing room when I got there after class.

"Hi," she said when I entered.

"Hey there, how are you?"

"A little nervous," she replied as I took off my robe. "My first time."

"You'll do fine," I said. I noticed Liz looking at me, so I took my time pulling my street clothes out of my bag, my cock swaying between my legs.

"It is nice to see you again."

I smiled. "I'm glad you're here."

"Are you? You haven't called."

"I know. I've been busy."

Liz frowned, her bottom lip jutting out. Then she shrugged and pulled her t-shirt off. She wasn't wearing a bra, and her nipples were as pink and hard as I remembered from Katherine's party. I looked away, but the rise in my cock betrayed my feigned lack of interest. Liz unzipped her shorts and let them fall to the floor. She wasn't wearing panties either and looking at her shaved pussy made me long for another round of cunnilingus with her.

"Are you free Saturday night?" I asked without any plan or intention.

"Sure."

"How about dinner?" I asked, even though the only thing I was really interested in getting my mouth on was between her legs.

"Are you cooking?"

"No. I thought we would go out. Do you like Italian?"

"Love it."

"OK. Cool."

I leaned over and kissed her. She kissed back as her hand reached out and grabbed my exposed cock. Who knows what might have happened if the knock on the door hadn't come. We pulled away quickly, as Darlene, one of the other models, came in to get ready for her 2:00 class. I quickly got dressed as Liz donned her robe, grabbed a sheet from the stack, and started off toward the drawing studio I had just left. I walked her to the door.

"You'll do fine," I told her. "Just think of sports poses or things with action for the gestures. And for the longer poses, make sure you're not in a pose that is going to cut off circulation to your feet."

"OK," she said. "Thanks."

"Good luck." I hesitated at the door as Liz went in. I listened to her introduce herself to the instructor before I walked away.

As I walked back to my car, I couldn't believe I had spontaneously asked her out like I did. What was I thinking? But then, I wasn't thinking. The words had just come out. I felt so comfortable around Liz. I could be myself. She knew about my exhibitionism, and not only was she OK with it, she seemed to share in it. But I felt like I was betraying Jessica. I felt she and I owed each other something even though we had never had much to talk about in the dressing room or on break in classes we had worked together. What was wrong with me?

I was almost back to my car when I saw her walking ahead of me.

"Jessica?" I said.

She hesitated but kept walking. I jogged to catch up with her.

"Jessica!" I said.

She stopped and looked at me. "Dan. Hi."

"Hey. What the hell? I mean, how are you?"

"I'm OK."

"Are you? You disappeared after... you know."

"Yeah, I'm sorry about that," Jessica said. "I needed some distance."

"Why? Was it so bad?"

"Yes. For me."

"What do you mean? I know it was different from art class, but I thought you and I shared something special."

"Oh, we shared something all right."

"So why didn't you return my calls?"

"Because I wanted to forget it happened," Jessica said. She resumed walking, and I walked beside her.

"I don't understand. You initiated everything, after all. Why was it so bad?"

She stopped again and turned to me. "Look, I just want to finish my degree as soon as I can. I'm carrying 19 hours this semester, but that should get me my degree so I can get out of here. If I run into anyone who was in that class, I don't know what I would do."

"I don't understand."

Jessica sighed and looked at me. I had forgotten how pretty she was, and I found myself marveling that I had been lucky enough to have sex with her. And what was even more amazing was that there were witnesses to it.

"How much did you get for her class?"

"What?" I asked.

"How much did Dr. Tate pay you?"

"Two hundred. Same as you."

Jessica shook her head. "She had a thousand dollar grant to pay for models for her experiment. She told me I could have the entire 800 if I would fuck you in front of the class. Eight hundred for less than an hour? Sure, I told her. So I did."

I was dumbfounded. My jaw was probably hanging open. I swallowed and said, "You only had sex with me because Katherine paid you to?"

"Yep," Jessica said. 

She turned and walked away. I thought about running after her, but I decided it wasn't worth the effort. Whatever she and I had shared hadn't been real. The seductive looks, the grabbing me, putting me in her mouth, it had all been an act on her part. Until I made her cum and squirt that was. She couldn't have faked that.

I felt anger seeping up through me, but I didn't know who to be angry with. Jessica was just a pawn in the experiment. It was Katherine who had orchestrated the whole thing, Katherine who had not taken into account anyone's feelings.

Instead of continuing on toward my car, I turned and stormed over to the psychology building. Katherine was in her office with two students. I could hear them talking about scheduling and degree plans.

"Dan," she said when I walked in. "How are you?"

"I'm needy," I replied.

The two girls sitting in front of Katherine's desk looked at me then back at Katherine. I closed the door to the office and stepped over to the side of the desk.

"Ya'll can stay," I said to the two girls as I started taking my clothes off. "Dr. Tate likes to show me off anyway."

"I don't think this is really appropriate in front of freshmen," Katherine protested.

"Why not? Were there any freshmen in that class you had me naked and hard for?"

"No, there weren't."

The girls gasped as I slipped out of my underwear and let my erection escape. Tossing my underwear aside, I started stroking my cock.

"Dr. Tate and I did this all summer," I said to the girls. "Sometimes it was just me and her. Sometimes she had her student aide with her. But Dr. Tate likes to watch me get myself off. She won't touch me though. She is married after all. But she does like to use me for other stuff."

"Dan, you really should stop that and put your clothes back on. Do I have to call the campus police?"

"No, I'll be done in just a minute."

I was pumping fast, and the two girls were transfixed watching me stoke my cock.

"Here it comes," I said, and I exploded onto Katherine, the first burst of semen hitting her in the face. The two girls jumped but didn't say anything. The rest of my cum dribbled out onto Katherine's desk.

"Well, that was uncalled for," Katherine said as she wiped my semen off her face.

"So you paid Jessica 800 dollars to fuck me in front of your research group," I said when I had caught my breath.

"Ah. So that's what this is about." She addressed the two students. "Would you excuse us for a few minutes?"

"Sure," one of the girls said, and they both stood up.

"And don't say anything about this," Katherine said as they left her office, taking a last look at me and closing her door behind her.

I got dressed as Katherine watched me and explained.

"I wanted to achieve a certain level of sexual display, and I knew I wasn't going to get that from Jessica without a monetary incentive," she said. "Do you remember what she said the day I first met the two of you? She modeled because it was the highest paid campus job a student could get. You remember?"

I nodded.

"Whereas you seemed to enjoy just being nude in front of women. And I had seen you looking at her as the two of you finished your pose. I knew you wanted her."

"I wanted her to want me just as much. Not because someone was paying her."

"But you wouldn't have had her if I hadn't paid her. Don't you understand?"

"Yes, I do now. But it would have been better if I had known earlier. So I wouldn't have felt anything for her."

"I'm sorry. And they say that women have trouble separating sex and love."

I didn't know what to say to that. Since I was fully dressed by that point, I decided to just turn and leave without saying anything else. So I did.

"Dan?" Katherine called after me once, but I didn't stop.

I felt like crying, my dreams of a life with Jessica, making her cum and squirt time and time again, destroyed. I somehow managed to make it back to my car before breaking down. Once I got it out of my system, I drove to my apartment.

Jessica and I had nothing in common, I told myself. We never talked. She didn't seem interested enough in me to pull her head out of whatever book she was reading. Her only interactions with me were the result of being paid. Fuck her, I told myself. I forced myself to push aside all thoughts of her. I had a date Saturday with a girl who liked to be with me, liked to talk with me, and actually had things in common with me. I was determined that Liz and I were going to have a good time that Saturday.

To be continued...



Class Demonstration Ch. 07



I went to the store on Saturday afternoon and bought a box of condoms, a bottle of Astroglide lubricant, assorted chocolates, a bag of strawberries, and two bottles of Red Moscato wine. The cashier, a slightly overweight girl in her mid-twenties sighed when she saw my basket, giving me a longing glance. I just shrugged, and she scanned my purchases.

Liz and I had talked a lot on the phone during the preceding two days. She told me about her first nude modeling experience and that she loved the job. When I told her that they sometimes paired us up at the end of each semester, she seemed excited about the possibility of modeling with me in front of a class.

"But we can't do what we did at Dr. Tate's party," I told her.

"I know, I know. Maybe I just like spending naked time with you. Getting paid for it would be a bonus."

I agreed with her, and we talked about other things. The tenseness I had felt all summer was gone now that I was no longer waiting for Jessica. Writing her off was the best thing I could have done.

I took Liz to a nice Italian restaurant in Denton, and I opened up to her like I had never opened up to anyone. I told her about my exhibitionist tendencies, which had started when I was in middle school. I also told her about doing Katherine's research project with Jessica, masturbating for Katherine after modeling during the summer, and finding out about how Katherine had paid Jessica extra specifically so she would have sex with me in front of her research group. Liz seemed happy, especially when I told her that Jessica and I had parted ways. When I told her how I had interrupted Katherine's advising session to masturbate in front of her and her two students, Liz told me I should apologize.

"Why?" I asked.

"You just told me what an exhibitionist you are. Look at the opportunities she has given you. I think you were being too harsh with her."

"So you think I should go apologize?"

"Yeah. You never know when she might need you for another project of hers."

"You think so?" I said.

"You shouldn't ever burn bridges."

"Why is that?"

"Because you never know what you might miss. And if she has another demonstration like she had with you and whats-her-name, I want to be there on that stage with you instead of her."

"Wow," I said, looking at her erect nipples visible against her blouse. She wasn't wearing a bra. "You are naughty."

"You have no idea."

I learned a bit more about that once we got back to my apartment. I opened the wine and fed her strawberries. Once we got our clothes off, we opened the chocolate. I rubbed each piece on her pussy, and we took turns eating them. That didn't last long though as I couldn't stand to look at her vagina without putting my mouth on it. So I went down on her, and I kept going through at least five Liz orgasms. She would have too much and push me away, but I would gradually get my lips and tongue on her again. Her pussy was intoxicating, and she finally begged me to fuck her. I put on a condom, but she was so wet and primed from my excessive cunnilingus that I didn't need any lube. Penetrating her for the first time was like moving into a new house and immediately feeling at home. I took it slow, gradually building up until Liz came again, then slowing, delaying my own gratification. We tried several different positions, ending up with Liz on her hands and knees and me fucking her from behind. That was when I really let go, ramming into her again and again, building more and more speed. At some point, the feeling of her constricting pussy changed, and I didn't know if she was just having a more intense orgasm or something else had happened. But the feeling was beyond wonderful. I kept going and soon exploded inside her, not realizing until I pulled out that the condom had broken.

Liz felt of her pussy, rubbing our cum between her fingers.

"What was that?" she asked.

"Condom broke." I was still trying to catch my breath.

"Oh. I'm on the pill. So it's OK."

"Good. That felt amazing."

"Yes."

She lay against me, and I wrapped my arms around her. We slept in my apartment like that all night, in each other's arms, naked and without so much as a sheet covering us.

I awoke on Sunday morning with Liz's mouth around my cock. Liz's green eyes met mine when my eyelids fluttered open.

"Good morning," I said.

"Mmmmm," was all Liz could reply.

She got me good and hard before crawling up and settling herself on me, her vagina enveloping my dick like a warm cocoon.

"No condom?" I said, enjoying every bit of sensation.

"No point now."

She started slowly rocking back and forth on me, her breath deepening as her arousal level grew. I remained still, only flexing the head of my cock deep within her with each of her motions. I watched her face, thinking that I could get used to seeing her every morning, as her pleasure mounted. She came with a grunt, fully impaling herself on me. Her face and body then relaxed, and she looked at me.

"Thank you."

"For what?" I said.

"For letting me take charge."

I smiled and said, "So it's my turn," and flipped us over. Now on top of her, I started thrusting slowly, trying to angle myself so that my cock would hit high on top of her vaginal wall. Her deep breathing resumed as I fucked her, watching her arousal mount. I increased my thrusts, faster and faster, slowing down only when I felt myself about to cum. I wanted her to orgasm again before I let it go, and orgasm she did. I increased my pounding even as the height of orgasm racked her body so that I was able to shoot my semen deep inside her while she was still writhing in ecstasy.

I remained inside her, breathing fast and hard, holding myself above her with my arms, until my erection had subsided to the point that I slipped out. I rolled over on my side, still trying to catch my breath.

"That's a great way to start the day," I finally said.

"Yes, it is."

Liz kissed my cheek and rolled out of bed. "Can I use your toothbrush?" she asked.

"Sure."

I watched her walk naked to my bathroom to pee. She had left the door open, and her legs were spread on the commode so far that she was almost straddling it, and I watched the urine stream as it shot out from her shaved pussy. She grinned at me when she caught me watching her, grabbed some toilet paper, and wiped herself. I got up and joined her in the bathroom, standing next to her as I peed while she brushed her teeth. I had never felt comfortable peeing in front of a girl (or anyone else, for that matter), but with Liz, everything felt so normal.

We showered together, washing each other's back. I had a shift at PepBoys, so I put on my uniform as Liz put on her clothes from the previous night.

"I guess it would be an understatement to say that I had a great time," I said to her as we walked out together.

"Yeah, it was pretty awesome."

We stood at the edge of the apartment complex parking lot looking at each other in silence for what seemed like a long time.

"I better get to work," I finally said, desperately wanting to stay with Liz.

"Yeah. I'll see you later?"

"You bet."

We kissed, and I pulled myself away to go to work. The day at the parts desk was drudgery. I couldn't get my mind off Liz. I called her as soon as the shift ended. She was doing her psychology homework, but we talked for an hour anyway. She finally pulled away, telling me that she had to get her work done.

I didn't sleep well. After just one night, the apartment seemed empty without Liz. What the hell was wrong with me? How could I be obsessing over a girl I barely knew? And then I thought of her eyes, her ass, and that luscious pussy. I remembered the way she looked at me the first time I ever saw her, when I was standing naked on that stage for Katherine's research project, her eyes on my hard cock as Katherine talked about each part of it. I relived the entire demonstration in my mind, and I masturbated in bed, except that Liz had replaced Jessica on that stage. Then I thought of eating her beside Katherine's pool with all of her party guests looking on, how much Jessica loved being naked, being looked at while naked, people watching her orgasm with my mouth on her. I was just able to kick the covers away from myself before cumming all over my chest and belly.

I lay there and sighed before getting up to clean myself off. My clock radio said 1:30 AM. I wondered if Liz was awake; I wondered if she had gotten herself off like I had. That was part of what made Liz special, that our kinks, especially exhibitionism, were shared. After wiping the semen off me, I peed and got back in bed.

On Monday morning, I had two classes of my own before modeling for a 2:00 to 5:00 figure drawing class. Liz texted me late in the morning asking if I could meet her at the Psychology building at 5:00. I texted her back and said yes but that I might be a couple of minutes late.

Drawing class was a fun gig. I started off doing short gesture poses. One of the late students was a girl in a wheelchair. I kept doing my pose as the teacher propped the door open for her to get in. I saw two girls walking by in the hall. Their mouths dropped when they saw me in all my naked glory. Before the handicapped student could get all the way in, one of those girls had backed up and stood in the hall looking at me. I was in a pose, and as a professional, I wasn't about to break that pose. But being put on display like that and seeing what appeared to be a very appreciative female audience was a huge turn on, and I had to fight with my body to keep from being aroused. I almost wished the teacher would just prop the door open for the whole class, but he made sure it was shut as soon as the wheelchair bound student made it inside.

I made it to the psychology building at five after five. Liz, wearing a short sun dress, was sitting in the lobby waiting for me. Her face brightened when she saw me, and I would imagine that mine did as well. She stood, and we kissed.

"Hey there," I said.

"Hey," Liz smiled.

"Missed you last night."

"Me too."

"What are we going to do about that?" I asked playfully.

"I don't know. What do you suggest?"

"You could spend the night with me again."

"What would I tell my roommate?" Liz asked as she walked me over to the elevator and pressed the up button.

"Tell her you spent the night getting ravished by your boyfriend."

"Oh. Are you my boyfriend now?"

"If you want me to be."

The elevator opened, and Liz took my hand and led me inside. She pressed the three button but held on to my hand.

"Where are we going?" I asked when I realized that Katherine Tate's office was on the third floor of this building.

"Where do you think?"

I had thought about what Liz said during our dinner date about apologizing to Katherine, and I agreed with her that it was a good idea. I just wasn't ready to do it right then, especially unannounced. The elevator opened on the third floor before I could say anything else. Liz led me down the hall and straight into Katherine's office. Like the last time I had been there, she had two students with her.

"Dan! Liz! You're just in time," Katherine said. "Come in."

Liz closed the door behind us, and the two girls moved their chairs to either end of Katherine's desk.

"Hi," I said.

"Dr. Tate," Liz began, "Dan has something he would like to say to you."

"Good. He needs to say it to Amelia and Hannah too. They were both here the last time he was. I'm afraid he interrupted an important advising session."

I glanced at the two girls who both looked back at me with suppressed grins. I nodded to both of them. "I'd like to apologize for that," I said. "And for the other thing. That was uncalled for."

"What other thing?" Katherine said.

"You know."

"No, I don't. Quite a bit happened in that few minutes, and I'd like to know exactly which of it you are apologizing for."

I took a deep breath and looked at Liz. She shrugged and nodded back toward Katherine.

"I am sorry for interrupting your session. Allison, Hannah..."

"Amelia," the girl to Katherine's right said.

"Amelia. Sorry about that. Amelia, Hannah, I'm sorry for shocking you by removing my clothes when you weren't expecting it. And I'm sorry for masturbating in front of you. It was not my intent to shock you. I was upset with Dr. Tate, and you were innocent bystanders."

Katherine leaned back in her chair, a frown on her lips.

"Dr. Tate," I continued, "I apologize for coming here uninvited, for masturbating in front of you without your permission, and most of all for allowing my come to hit you. That was more than uncalled for."

Katherine's mouth slowly turned into a smile. "How about it girls, is he forgiven?"

"I think so," Hannah said.

"I don't know," Amelia replied. "He got my name wrong, and I still feel a bit scarred from what he did."

"Do you think he should be punished?" Katherine asked.

"Oh yes," Amelia said immediately.

"How about a spanking," Hannah suggested.

"Excellent idea," Katherine said. "Dan, how does that sound?"

"I don't know."

"I could have had you charged with public lewdness. A spanking seems like a light punishment, plus, you would get back in my good graces."

I looked over at Liz and saw that she was grinning so big that I thought she was going to burst out laughing.

"OK," I said with more than a little trepidation.

"Good. Take off your clothes then."

My eyebrows went up. This might be fun after all. I quickly got undressed, dropping my clothes at Liz's feet. I was still a bit too nervous to have a full erection, but I was definitely feeling some arousal. Amelia and Hannah made a show of looking up and down at my naked body. Katherine pushed her chair back from her desk and motioned for me to come around.

"Feet there," Katherine said, pointing to the floor on the left side of her chair. "Bend over my lap and put your hands on the floor there," she continued and pointed to the right side of her chair.

I lay across her lap, holding myself up to see what was going on. Katherine pushed on the back of my head.

"Look at your feet under the chair," she ordered.

"Yes ma'am."

I felt Katherine's hand rub my ass, almost caressing it, before it drew back and came down with a pop.

"Count," she said.

"One!" I said, feeling the sting of her swat.

She rubbed the other cheek before swatting it harder than the first one.

"Two," I gritted.

Katherine alternated between buttocks until I had counted to thirty. My ass was sore, but the pain was almost pleasurable, especially since my penis was rubbing between Katherine's legs during the entire spanking.

"All right," she said. "You can get up."

"Yes ma'am," I replied.

I stood and looked down at my erection pointing straight out at full attention.

"I think he liked that," Hannah said.

The two girls giggled.

"You ass is red," Liz said. She came over to me and gently rubbed on my butt. Her touch felt warm and sent shivers up my spine.

"Maybe you should take care of that," Katherine said. "Just be careful this time."

"Oh, he won't get any on you," Liz said as she dropped to her knees and took me in her mouth.

I shuddered as her mouth engulfed me. She used her spit to get me lubed up and then used her hand to try to get me off quickly. That wasn't much of a problem since the sensation of being naked in front of these four females, the humiliation of the spanking, the dull throb of painful pleasure in my buttocks from that spanking, and the rapid motion of Liz' hand made me cum quickly. As I tensed up in preparation of the release, Liz engulfed me with her mouth, looking up at me with those green eyes. She and I gazed at each other as I ejaculated, and as she swallowed every ounce of my semen, I knew then that I loved this girl who set this whole thing up just because she knew I would get off on it. And I knew that I would soon come up with something just to get Liz off.

Amelia and Hannah both laughed.

"That was awesome," one of them said, but I was too preoccupied to see which one.

Liz and I were still gazing at one another, knowing grins on our faces. She knew what I would give her as soon as we got back to my apartment.

"All right ladies," Katherine said. "Show's over. I do have something to discuss with Liz and Dan, so if you will excuse us..."

"Thank you," Hannah said to us as the two of them exited the office.

Liz tidied herself up as I bent down and started putting my clothes back on.

"That was fun," Katherine said.

"Yeah, it was pretty hot," Liz agreed. She pulled the two chairs from the sides of Katherine's desk back to their proper places in front and took a seat in one of them.

Fully clothed, I sat in the other chair, and I'm sure I winced a bit when I put pressure on my sore butt.

"Exciting news," Katherine said. "I just published the first article from my study, and it is getting a great response. We might be able to do another demonstration, but on a bigger scale, and I wanted to know if you two would be interested in being the models."

"Bigger scale, how?" Liz asked.

"A much bigger audience for one. In addition to the study subjects, there would be other researchers there as well. We would go through the same examination procedures as before, with me pointing out the anatomy of both of you. Liz, are you sure you're OK with a pelvic exam in front of at least a couple of hundred people?"

I looked over at Liz, and her eyes seemed to sparkle.

"Yes," she said in a soft voice, and I knew that this was one of her fantasies, that she was embracing the possibility of it becoming real while also being frightened of it.

"Since the audience will be so big, we'll have large screens behind and above us showing close-ups of what is going on. So there will be cameras on you. I'll want to have video record of this anyway. So you'd both have to sign a release for that. Are you OK with that?"

We both nodded.

"I'll want it to go just like it did last time, with the two of you engaging in intercourse on stage. Of course, like before, none of the study subjects will know this is coming, which is kind of the point of the whole thing."

We were all silent for a few moments. Liz reached over and took my hand, squeezing it.

"Now, this is all several months away," Katherine said. "Maybe even a year or more. But I wanted to give you first crack at it, Dan, because you did so well during the first demonstration, and Liz, because your readings from that first study were so off the charts."

"Thank you," she said with a smile.

"Yes, thank you so much for offering this to us. It's exciting."

"Yes, it is," Katherine said with a grin.