Julia lay on her back on her bed and imagined a boy walking across the bedroom toward her. He was naked and while he didn�t seem to have a distinct face, he had lots of muscles and a narrow waist and a really big dick. Her mental picture was based only on theory, but she had a vivid imagination. She moaned a little and pushed her tee-shirt and bra farther up on the left side so she could pinch and pull at her nipple more easily. Her shorts were down around the middle of her thighs and the crotch of her cotton panties was pulled over out of the way. The middle finger of her right hand was polishing little circles around her clit, which was damp and hot to the touch. In fact, she felt hot and prickly all over.

As she shifted position, turning her head against the pillow and spreading her knees, she tried to picture Jeff McNulty from Algebra looking at her and smiling. Jeff was really cute and the image of him standing there and watching while she masturbated made little electric sparks erupt from her crotch. Quickly, she made him sit down while she slowly danced and gyrated in front of him. She was breathing harder and faster and then---

And then there was a throat-clearing sound a few feet away. It took a second before she realized the sound wasn�t just in her enflamed imagination. She jerked her head the other way on the pillow and froze. Her older brother, Tom, was leaning against the doorjamb, ankles crossed and arms folded, staring at her with a crooked smile. Julia gulped and yanked her shorts up and her shirt down, and then squeezed her eyes shut. She couldn�t look at him.

"Hey. Hey, Jules." There was a pause. "Come out, come out, wherever you are." She heard Tom step closer and then the side of her bed sank as he sat. She felt his fingertips pushing the hair off her face and tucking it behind her ear. She swallowed and finally opened her eyes.

"Sorry to disturb you, Julia. I was just walking down the hall and I heard these odd sounds, so I stuck my head in. Didn�t mean to catch you with your pants down." He smiled broadly.

She just lay there and stared at him for a moment. Tom was twenty to her thirteen and very nice looking. She hadn�t seen him since Christmas and he had come home from college only the day before. At the moment he was bare-chested, wearing only an old, faded pair of soccer shorts that were too tight for him. The way he was sitting — sideways, one foot tucked under himself — made his penis bulge out in front. She stared at the outline of her brother�s dick and swallowed as she felt her pulse increase again. Oh, god, what was wrong with her?! She could feel the tears coming and she screwed her eyes shut again.

"Hey, hey, hey — what�s the matter, babe? I said I was sorry. It was just, er, unfortunate timing, ya know?" He started to get up. "Look, I�ll go away and let you---"

Julia grabbed his hand and pulled him back down. "Tommy, don�t go! Please? I — I need to talk to someone about, about these . . . feelings I have. Please, can I tell you about this?"

"Yeah, okay, I guess." He peered at her. "Feelings? You mean like — what? Sex?"

She nodded slowly, beginning to wish she had just kept her mouth shut. She and Tommy had always been close — almost more like best friends than siblings. Since their father�s death five years before in a car crash, and their mother�s increasingly frequent retreats to her darkened bedroom with migraine, Tommy had sort of taken on the role of protector and advisor. She had gotten into the habit of taking him her everyday problems and he had made a point of listening to her and trying to be helpful. She had thought there wasn�t anything she couldn�t go to him with.

But sex was different from everything else.

Tom saw her hesitate and guessed the reason. "Look, Jules, if this is going to embarrass you, you can change your mind, you know. No big deal."

"Yes, it is a big deal." She took a deep breath. "I�ll bet it won�t embarrass you, though, right? You�re a boy. Boys talk about sex all the time."

He grinned. "Yeah. Not often with girls, though." He reached over and patted her on the knee. "I�ll get you started if you want. You were masturbating when I looked in. Is that what�s bothering you? You do know everybody does that, don�t you? Boys and girls? And I mean everybody!"

Julia could feel the flush stealing over her cheeks. "Yeah, but--- It�s not that. I mean, I know everybody does it, I guess. But I do it all the time! I can�t *not* do it!" Tom�s eyebrows rose and she could feel his eyes lingering on her small breasts. "I think I�m a — a — what do they call those women who can�t ever get enough sex? An aphrodisiac?"

He laughed. "You mean a nymphomaniac? I�m not sure there really is such an animal — though I guess every guy secretly hopes there is." Now she saw him hesitate. "Besides, babe, you�re only thirteen. You haven�t ever actually *had* sex, have you?"

"Well, . . . no." She shrugged. "But I think about it all the time. I can�t be around boys without daydreaming about it. Even my teachers. I even get horny over a couple of the girls I know, Tom!"

"You keep saying �it�. What is it you actually do that�s worrying you?" The faint leer was back on his face. "Tell me about it in detail, babe."

He�s trying to get me sexed up again, she thought. He wants me to talk about sex to him because it�s sexy when a girl talks about sex to a boy. He�s right, too. She could the warmth growing between her legs again.

"Well, . . ." She licked her lips and moved slightly so her breasts shifted behind her tee-shirt. "In class, I watch some of the boys and I can feel myself getting wet — between my legs. And I really, really want to put my hand down there and rub myself."

Tom smiled. "You want to rub what?"

"My clit. I want to rub my clit." Saying that word to her big brother as he sat there looking down at her made a wave of warmth wash over her. "I want to squeeze my nipples and I want them to see me doing it. I look at Mr. Andover�s . . . at his penis, when he�s standing in front of his desk. And I want to see it and hold it in my hand. And that makes me want to masturbate even more." She could feel her heart rate speeding up again. "Nearly every day, I have to go to the girls� bathroom and get myself off sitting on the toilet." She swallowed. "Tom, I�m really worried. I know you think it�s all very sexy and everything — but thinking about sex all the time is affecting my schoolwork! I can�t concentrate on doing my homework, and I�m lying here rubbing my pussy when I ought to be studying! And I can�t make myself stop!"

"Okay, okay, Julia — don�t get upset." He took her hand and squeezed it a little, and it was such a sweet thing to do she nearly broke down and cried. "Look, I went through kind of the same thing when I was your age, . . . though I don�t remember that it got in the way of school, especially. But I suppose most boys� grades go down for awhile when they hit puberty. It can be pretty rough." He smiled again. "But I guess I never thought about girls getting so carried away with it. No reason it couldn�t happen, though, I suppose."

Julia glanced at her crotch of her brother�s shorts again. His organ was obviously swelling. In fact, it looked like it was about to burst out. She licked her lips again. Might as well go the whole hog, she thought.

"You know, Tommy, since we�re talking about all this, . . . I think about sex every time I look at you, too. I think about your, your dick. Your penis. You�re very sexy, Tom. You make me hot."

He just sat there for a moment, staring at her, not moving. She noticed the throbbing of an artery in his neck.

"I could, um, show it to you. Would that help?"

"Maybe." Oh, God, was she going to get herself in trouble here? She was pretty sure her brother wouldn�t lose control of himself — but maybe *she�d* be the one to lose control. Oh, what the hell. Her pussy was on fire and her nipples were engorged. "Can I see your penis, Tom? And I�ll show you my tits, okay? Would you like that?"

She shifted herself upright and began hauling her shirt off over her head. My part of her brain couldn�t believe she was doing this, that she was about to get naked in front of her big brother, but she couldn�t stop now.

Tom watched for a moment with his mouth hanging open. Then, as she tossed her shirt aside, he quickly stood up, pushed his shorts down his legs, and was naked in a single motion. He sat down cross-legged on her bed. His cock was pointing rigidly somewhere over her shoulder.

"Oh, God," she murmured, staring at it as it moved in rhythm with his pulse. The image of it — the real thing, right there in front of her, only a foot or two away — seemed to take over her mind. Without taking her eyes off Tom�s cock, she fumbled behind her back and unhooked her bra, sliding it down her arms and tossing it in the directing of her shirt. Without thinking about it, she cupped her breasts in her hands and began squeezing them and pinching the tips between her thumbs and forefingers.

Tom slowly took his erect organ in his hand and began stroking it as he watched Julia playing with herself. Her eyelids had begun to droop and her lips were parted. He didn�t care that this was his kid sister he was staring at. He had never seen anything so arousing in his life.

"Sweetheart, why don�t you take off your shorts, too? Go on with what you were doing when I came in."

Julia paused as that picture formed in her mind. "Do you, . . . want to watch me masturbate, big brother?" My god, it felt like her clit was about to explode.

"Yes, please. Julia, I want to watch you play with your clit." He licked his lips. "I want to watch you climax."

Slowly, she hooked her fingers under the elastic of her shorts and panties and pushed them down her legs. Then she bent her knees and shoved them down the rest of the way and off her feet. Then she let her knees fall to either side, still bent, displaying her whole crotch. There was a buzzing in her head as she watched Tom watching her. He was beginning to stroke his penis. Oh, god, she realized, he�s going to masturbate, too. We�re going to get off together. I�m lying on my bed naked with my big brother and we�re . . . are we going to fuck? No, I don�t think. . . . She put that worrying thought out of her mind for the moment and let her fingers slide down the length of her exposed pussy.

Julia watched as Tom moved up a little so his dick was only an inch or two from the opening of her cunt. Please don�t put it in there, she thought. I sort of want you to but we shouldn�t, we can�t. That�s too much. But I don�t know if I could make you stop if you did it. My god, what are we doing?

But he didn�t lean forward and slide himself inside her, as she feared and half-hoped he would. Instead, he shifted onto his knees and arched his back so she had a perfect view as he began jerking off in earnest. That aroused her so much she heard herself whimpering as her fingers began rubbing her clit harder and faster. Her other hand left her hard, stiff nipple and she found herself pushing her fingers up into her cunt.

She was watching her brother�s face and she could tell instinctively when he was about to come, and that pushed her over the edge of her own climax. As she trembled and jerked and the lights exploded around her, she stretched her legs out straight in front of her, trying to make fists of her toes.

Immediately, Tom scrambled forward, his knees on either side of her body, until he was sitting astride his sister�s waist. Her hands were caught beneath him and she was suddenly aware of his balls pressing against them. She managed to rotate her wrists and found her hands filled with his testicles. It was an amazing sensation. She squeezed a little, expecting them to feel like golf balls but instead they were more like tough egg yolks in little hairy sacks.

When she did that, Tom closed his eyes and made a choking, moaning noise and she saw an eruption of white spurting across her small breasts and collarbone. It felt warm and wet but it didn�t hurt. Then he lifted his aim a bit and the next spasm left a trail of come across her mouth and oozing down her chin. Without thinking about it, she put out her tongue and licked some of it off. She sort of expected it would taste nasty but it didn�t seem to have much flavor at all, except for being kind of salty.

Her brother had opened his eyes now and he watched her with a sort of stunned expression as she moved her tongue all around her lips, gathering up his come and swallowing it. She knew that that would really turn him on. At least, all her friends said boys went crazy when you let them come in your mouth.

She gave his balls another little squeeze and he jerked then carefully slid off her and stretched out by her side. "Julia, we are both insane," he said quietly and slowly shook his head.

"Maybe." She turned her head and smiled at him as she began wiping his semen off herself with her wadded-up tee-shirt. When he slid his arm around behind her, she turned on her side and cuddled up to him. It felt so nice, lying here naked in her big brother�s arms. He was still her protector and she felt safe and content. She reached over and let her forefinger move lightly up and down his shrinking penis, marveling at the warmth of it.

She touched the tip of it; there was still a little semen leaking out and she gathered some of it up and drew a little heart shape with it on his smooth chest. "I love you, Tom. You always take care of me and I�m grateful for that."

He smiled. "I love you, too, Julia. I mean — well, you know what I mean. And I�m grateful to have such a very, very sexy little sister." He hugged her closer. "Think you�ll be able to do your homework now?"

She laughed. "Maybe — if I know we can do this kind of thing on a regular basis." She looked up at his face. "Seriously, Tommy. I want to make out with you again. I don�t think we ought to fuck, though. At least--- well, not for a while." He nodded in agreement. "But I want to be naked with you again and masturbate while you watch. God, I never imagined anything could be so sexy! And I want you to come on me again," she added with a squeeze of his organ. "In fact, next time I want to jerk you off myself, okay?"

Her brother looked down at her thoughtfully for a moment. "Yeah — it�s crazy and wrong and everything, but I want to do this again, too. And the thought of you getting me off. . . ." He took a deep breath. "Well, fair�s fair. Next time, I�ll lick your pussy until you come, how about that?"

She shivered at the picture that brought into her mind. "Oh, yes! Oh, Tommy, I�m sure there are lots of things we could do that you know about, that you could teach me."

It was going to be an interesting summer.

Copyright 2011 by Michael K. Smith. Copies may be made and posted elsewhere for personal enjoyment, but all commercial rights are reserved.