11 comments/ 243673 views/ 36 favorites Caitlin By: Caitlin "My sisters?" I said, trying to act like a 'normal' brother. "They're my sisters breasts. I guess they look good on her. They're small too, but she's a small girl." "If she weren't your sister, would you want to fuck her?" "Hey," I laughed, "I'm a horny male. I'd want to fuck both of you if I could!" "But would you pick her over me?" "I don't know how to answer that, Amber. She's my sister. Like I said, I've always liked small breasts. To me, you're perfect!" "What about Cait's breasts. You don't think that they're perfect?" "I guess they would be if you liked bigger boobs. I just like my ladies small, that's all. And speaking of Caitlin, where is she?" "Oh, she went shopping for the groceries." "Oh? And why didn't you with her? I thought you two were inseparable." "Hey, we work together at the same hospital. Doesn't mean we're siamese twins!" "You could have fooled me!" I laughed. "So, what did you have to tell her to get this opportunity?" "Oh, I told her I wanted to catch a nap before going to work." "And this is how you nap?" Amber laughed. "No, I wanted to cool off first. Now I'm going to take my nap." Then, as she climbed out of the pool and I gazed at her naked, perfect, pear-shaped ass, she asked over her shoulder, "Want to join me?" "Will we sleep?" "Only if you want to!" she grinned. Amber was snoring quietly as I closed the door to my sister's room. We'd fucked gently for about 30 minutes before she came again and she fell asleep as we cuddled. I got up and took a quick shower. When I emerged, Cait had returned. I helped her put groceries away. "Did you and Amber have a good swim?" she asked. "Yeah. We swam a couple laps." "Is she a good fuck?" "Huh?" "Don't give me that bullshit, big brother," said my sister, blushing furiously, but not backing down. "My room reeks of sex, and both your bathing suits were floating in the pool, so I know you two went at it. Is she any good as a fuck?" "Well, yeah. She's pretty good." "Do you... Do you like her?" "Yeah, I guess I could say that I like her." "I suppose you could," chided my sister, "especially since you just got through fucking her brains out!" She laughed at my open-mouthed stance and told me she had to wake Amber up, reminding me that I was going to fix a lunch for all of us. I threw together a salad with some grilled chicken breasts from the night before and we all sat in silence as we ate. Amber and Cait would look at me, then look at each other and laugh. I'd just roll my eyes. When Amber left, Cait told me she was going to take a nap. "Want to join me?" she chided. "I would, but I might fuck your brains out too!" I replied, giving her an opening. "EWWW!! You're my brother, Dirk!" "Yeah, yeah. I might give you cooties or something." "Or something. Wake me up at 3:15, OK?" I gave her 10 minutes and then I snuck up and stood outside her door. It was open a little and the sight that greeted me had me hard once more. My little sister lay back on the bed, naked from the waist down and was plunging a dildo into her tight little cunt. She was holding something as she fucked herself, but I couldn't see what it was, so I pushed on the door a bit, hoping it wouldn't squeak. It moved about a half-inch and I could see that she was holding a picture frame. She was kissing it and talking to it softly. "Yes, fuck me, baby!" she whispered. "Fuck my tight little cunt and make me cum over and over again, you bastard! Fuck your little slut!" She began to ram the dildo into her pussy harder and faster, her words becoming incoherent as she did so. Her back began to arch and she dropped the picture onto the bed as her hand pushed her blouse up and she pinched her nipple hard and choked on an orgasm. I watched in fascination as she bent like a bow and shuddered and was suddenly jealous of the guy - oh, wait, there was Amber to think of - the person that could make her feel like that. So I looked down to see whose picture it might be. I was very startled to see the picture of me from boot camp in that frame! "God, Dirk, I want you to fuck me so bad!" she cried out softly. Cait then turned onto her side and I could see her sobbing a bit before her breathing became more regular. She hugged the photo to her breast and fell asleep. Shaking with need, I went to my room and masturbated until I had to wake Cait up for work. As I'd been warned, I didn't see them the rest of the week. But one night when I got up to piss, I could hear them in my sister's room. I saw a flickering light and looked in. The room was awash in candles and Caitlin had Amber tied to the bed. She was riding a double-headed dildo as she straddled the taller girl. "That's it, you horny little slut," hissed Amber as my sister rode the plastic dildo between their legs, "Fuck me hard, you cunt. Make your big brother spurt a baby deep into your pussy, you little clit sucker!" My cock swelled at the sight of the two of them going at it. I stood as far back in the shadows as I could while watching both girls fuck each other silly. They both exchanged dirty talk, but the subject was mainly about me. Caitlin came hard as she rammed herself down onto that monster, pushing it deep into Amber's cunt as well. I saw Amber's back arch and then watched her shudder, indicating that she was cumming. Cait reached down to Amber's nipples, pinched down hard, twisting them back and forth as Amber screamed in ecstasy. Finally Cait squealed and collapsed atop Amber in exhaustion. There was lots of giggling and kissing that followed before they were at it once again. I stroked my cock hard as I watched my sister's hot little ass bouncing atop the other girl's pussy and I began to spurt as Cait bent over, the glistening folds of her cunt exposed around the hot pink dildo that was stabbed into her core. Cait's pussy, inner thighs and the dildo glistened with her juices as the two girls made out in front of me. I stifled a groan and shot a load into my underpants, slumping against the wall as I came. Finally, they stopped and Cait began to talk to Amber. "What was it like, fucking him?" "Who, your brother?" "No, my grandfather!" chided Cait. "Oh God, Cait!" she gushed, "He's got such a wonderful cock! It splits you wide open at first and then tapers inward so that you feel he'll never want to come out of your pussy! It's so hard, yet so soft at the same time." Cait began to untie the girl while she spoke. With her hands free, Amber began to caress my sisters taut little body, playing with her ass and making me hard once more. "He's so gentle, but damn, when he gets going, he's a fuckin' animal. He rammed me so hard I thought his cock would come out of my mouth!" "Did it hurt?" "FUCK no!" she laughed, "It felt better than any cock I've ever had in me. And shit if he didn't love my breasts too!" "I love your breasts," whimpered Cait. "Yeah, but you're a girl," admonished Amber. "I've never had a guy I was attracted to tell me I had 'perfect breasts.' I thought he was handing me a line at first. I mean, most guys want my ass or a blowjob from me. Your brother genuinely likes my tits!" "Oh." Cait sounded dejected. "Oh, hon, what? What's the matter?" "If he likes your small tits," my sister sobbed, "Then he probably won't like these udders!" "They are not udders!" scolded Amber, "They are beautiful and you're perfectly shaped! I'm sure Dirk loves them!" "No," she cried, "no, I'm just his sister. You're the one he wants." God, I wanted to walk in and tell Cait that she was just as perfect as Amber, but I was so afraid that I'd freak her out. Damn it! I loved them both. I just loved them... differently... or did I? "Stop that right now!" demanded Amber and I jumped, wondering if I'd spoken out loud. No, she was talking to my sister. They began to cuddle and whisper between them. Soon they were kissing again, their hands roaming across their bodies. I watched for a long while, stroking my cock, but I knew that it would be awhile before I could cum again and sleep was hitting me hard. I went back to my bed and slept fitfully with a woody that wouldn't subside. I didn't see them again until Friday afternoon when I returned home after my interview. Not only had I gotten the job, I'd been offered the supervisory position and more money than I'd originally asked for! The reason he'd cancelled my previous appointment was to tell the VP in charge of my department that I was too qualified to pass up. I was elated. Caitlin jumped for joy and kissed me on the lips at the news. I gave her ass a squeeze and kissed her right back, causing her eyes to go wide and then give me a quizzical look. I spanked her ass to move her out of the way and then Amber sidled up to me like a cat, rubbing against me and purring, "I knew you could do it, Dirk!" Her kiss was longer and more drawn out. I could feel my cock getting hard against her and I nearly jumped when I felt her hand reach down and cup me through my pants. "My, but he's got a big one!" said Amber, turning to look at my sister while fondling my cock. Cait was beet red, but her eyes were glued to the spot where the redhead was touching me. I finally pulled her hand away. "You're embarrassing my sister," I said softly. "Besides," I continued louder, "We have a night of food, drinking and dancing to attend to!" The two of them cheered and we all took turns in the shower and got ready. I wore slacks, a dress shirt and a blue blazer I'd liked. The two girls came out of Cait's room and my jaw literally dropped to the ground. Amber wore a tight, black evening gown with something gauzy and black draped around her. Caitlin wore a clingy burgundy number that hugged all her curves. It also had a plunging neckline in the front that showed off the curve of her breasts and the back went low enough to where I was pretty sure she wasn't wearing underwear. I swear, if Amber hadn't been there at that moment, my sister would probably have found out just how much her brother wanted her. "Roll your tongue back into your mouth, boy! Cait, find a drool-cup for him!" She jingled the keys, "I'm driving because you'll be too distracted, big boy. Besides, my pickup has a bench seat in front. You're in the middle, hunk." We had a wonderful dinner of filet mignon, oysters, lobster and crab, followed by cocktails and a delightful dessert. We hit three bars before we found one that played music we enjoyed. At first, Amber and Cait danced by themselves, then I danced with each of them. Just after that, guys started coming up and asking one girl or the other if she wanted to dance. They refused and after the fourth one, Cait simply got up and joined Amber and I on the dance floor. The music ended and the DJ put on a slow tune. "You two dance," called out Amber, "I have to go pee." "Too much information!" called out Cait. Amber stuck her tongue out at my sister and then walked briskly to the ladies room. I took Caitlin into my arms and we danced, looking at one another and talking as best we could over the sound. "You like her?" asked my sister. I nodded. "She's beautiful," I said, adding quickly, "Just like you!" "Thanks, Dirk. You've always been a wonderful brother. You really think I'm beautiful?" "Cait, if you weren't my sister, my hands would be all over you right now!" Cait grinned. "What do you mean by that?" "I mean that you are the hottest little babe on the dance floor and every guys eyes are on your tight little ass, wishing their hands were where mine are." "But your hands aren't on my ass," she said with just a little slur in her words. I grinned, lowering my hand from her waist to her ass, and grabbed it. She squeaked and her mouth opened, but she didn't move my hand. In fact, she pressed herself closer against me and rested her head on my shoulder. I put my arms protectively around her and kissed the top of her head. I felt her sigh and wrap herself around me just that much tighter. When the music stopped, she didn't want to quit and swayed against me for a few more seconds. The DJ announced he was taking a break and reminded us to tip our waitresses. Cait and I broke apart, but kept one arm around each other as I led her off the dance floor. Some guy was trying to chat Amber up and she kept brushing him off while giving Cait the thumbs-up. The guy persisted a bit more and she turned around fiercely and yelled, "NO!" at him. He looked like he was about to do something stupid when I walked up. He looked at me, grumbled, "bitch" under his breath and walked away. "I ordered us more drinks," she told us as Cait and I sat down. The waitress arrived a moment later and put them on the table. We chatted for a bit and then the two girls decided they had to go to the restroom again. Both of them planted showy kisses on me before they left, with me grabbing their asses and groping them for good measure. "See you later, honey! We'll be back in a moment after we freshen up!" they both chimed. "Don't fall in!" I chided back. They stuck their tongues out at me and put their arms around each other as they walked to the restroom. I rolled my eyes and watched them as they created a wake of craning necks while working their way to the ladies room, stopping at one point to kiss each other passionately amid the hoots and hollers of guys - and girls - around them. I got up to walk outside and get some fresh air for a moment. I chatted with the girl collecting the cover from everyone and she complimented me on how beautiful Cait and Amber looked. "Which one is yours?" she asked. I was about to say that Cait was my sister when I noticed the asshole that Amber had blown off was standing just a few feet away. For some reason, I decided to be just a little cocky. "Both of them," I said. She laughed and said, "Lucky them!" The asshole turned and, recognizing me, gave me a glare as he tossed the butt of his cigarette into the street. "No," I told the girl as I watched the guy head back inside, "Lucky me!" She laughed. I thanked her and then saw my girls coming out of the restroom, so I headed back in. The music started again and it was a song about butts and two girls "doin' it." Seeing the table empty, Amber grabbed Cait and pulled her up to the dance floor. They began shaking and shimmying at each other, getting closer and closer as the space became more crowded. I sat at the table, giving Amber a little wave to let her know I was back. I watched as she winked at me and then began to rub up against my sister. Her hands snaked around Cait's waist and grabbed her ass as they dry-humped against one another. They kissed and then Cait turned around, grinding her butt back into Amber. Amber put her arms around Cait's waist as they gyrated, her hands moving up and down my sister's sides and belly. Then Cait dipped just as Amber's hands were going up and she grabbed Cait's breasts, obviously pinching the nipples. I gasped, but noticed that they were positioned so that the only people they were visible to were the DJ and I. I looked up and he was smiling, watching them. Glancing over at me, he gave me a toothy smile and a thumbs-up. I laughed and just sat back, watching. The girls were all over one another, dancing as dirty as they thought they could get away with. The only place I'd ever seen them do more was on that TV show on the Entertainment channel where they show clubs around the world The music segued into another tune and both girls ran over to me, holding out their hands. They pulled me up onto the dance floor and then proceeded to rub up against me as they each straddled one of my legs, gyrating obscenely as we danced. I put my arm around the small of their backs and let them undulate against me. This got more hoots and catcalls from the crowd, so I turned and kissed Cait on the mouth. She returned it passionately, but kept her lips closed. I then turned to Amber and she practically rammed her tongue down my throat. I felt a hand cup my crotch and then rub up and down my cock. I expected it to be Amber's, but hers was caressing my cheek as we kissed. I broke off and looked down to see my sister's hand playing with my cock through my pants. Her gaze was glued to the obvious hard-on she'd created. Amber laughed, turned my head back to her and kissed me hard again. The music changed once more and the DJ came on, announcing it was time for an "oldie but goodie" as the strains of a familiar Beach Boys tune cut through the techno beat incongruously... "This one is for our hotshot out on the dance floor with two of the finest ladies in the house! EEEOOOWWW!" "TWO GIRLS FOR EV-RY BOOOYYYYYY!" I laughed and the ladies slipped off my leg as I began to do "the monkey." Cait squealed and clapped while Amber went "Oh, my GOD!" Everyone began to dance frantically around us like a scene from a bad 60's beach party movie. Before I could embarrass them more, Amber grabbed both my hand and Caits and led us over to our table. The DJ gave me a wave and waggled his tongue at the girls. "Drink up, shriners," cried Amber, "I think it's time to take this party home!" I sipped at the drinks she'd ordered (there was yet another round on the table) and shook my head. The second round had been strong! "Are you trying to get us killed?" I joked. Amber laughed. "What do you mean, Jake?" "That last drink," I explained, "Had enough alcohol to kill a horse. Are you sure you can drive?" She handed me her drink. "What's this?" I asked, looking at the amber colored liquid, "Scotch and soda?" "Try it," she said. I sipped. A puzzled look worked across my face. Soda water, definitely! But what else? I sipped again. "What the fuck is it?" I finally asked. "Soda and bitters," she said. "I'm the designated driver, remember?" "It looks like a scotch and soda." "That's the idea. I look like I'm drinking, but I'm not." "Good idea!" I shouted over the music. "Now, let's blow this joint." As we walked outside, the asshole was again out there smoking a cigarette. He looked up as we walked past him and he said something to Amber. "Fuck off, limpdick," she hissed, ignoring him. "Fucking lezzies and a homo," he told his friends. They hissed at him to shut up and I stopped. "Let it go, Dirk," whispered Amber. I couldn't, though. I turned and started to say something back to the asshole. Instead, one of his friends pointed to the pin in my lapel. "You're SF?" I stopped short. "Yes, I am. How'd you know?" He pointed to the same pin on his hat and told me what unit he'd served in. It was the same as mine. We talked a little and I discovered his CO had been someone I'd served with a few years back. Mike had gone on to OCS while I decided to get out before a real shooting war developed – and because I had to take care of Cait. We swapped stories for a few, then shook hands and, as I walked away, he turned to his buddy, the asshole, and said, "It's a good thing you didn't fuck with him, Toby. He'd have snapped your fuckin' loud-mouth neck before you even touched him." I smiled and shook my head, allowing the girls to link their arms in mine as we walked to the truck. While Amber unlocked our door, Cait asked, "Is what he said true? Would you have killed that guy?" "Yes it's true, but no, I wouldn't have killed him. I would have just roughed him up a bit to teach him a lesson, hon." "Did-, did you ever have to kill anyone?" she asked with wide-eyed innocence. I evaded the question. "I did what I was trained to do and no more, Caity" "Dirk?" "Yes Cait?" "Promise me something?" "Sure Cait. What?" "Promise me you'll always protect me? Just like you did when I was younger?"