Curious, the boy took his own jacket off, put it over a kitchen chair, and headed down the hallway. For some reason he found himself moving slowly, noiselessly. As he approached, Eric could see that the door to their bedroom was wide open and he drew silently closer. Pausing just an instant beside the door, the young boy peaked his head cautiously around the corner and looked into the room.
The boy nearly gasped out loud at what he saw. He could clearly see his big sister, her jeans and panties on the floor, sitting on her bed with her back propped against the wall and her feet and legs wide apart.
Carrie, his sister's friend, wasn't wearing any pants or panties either, and she was kneeling on the floor with her face pressed against his sister's pussy.
Eric knew what the two girls were doing. He'd been looking at magazines with pictures of teenage girls having sex with each other for several years now, and the porno novels his uncle provided were full of such experiences between young girls. He was just surprised that his sister would be doing such a thing with her friend.
The young boy watched the pair, the sounds of his sister's obvious pleasure loud and clear even from across the room. He could see Carrie, her hands on the insides of Kristy's thighs, using her fingers to pull apart the girl's pussy lips and flutter her tongue quickly over the hard little clitoris. Kristy seemed to especially enjoy that, and the boy watched his sister squirm and press her hands down on Carrie's head.
Remembering his own experiences as both he and his sister learned to use their mouths on each other, the boy imagined he could even smell and taste his sister's sweet, musky wetness as he gazed at the two girls. He felt himself harden inside his pants. It had been several days since the two of them had gotten together to relieve their pent-up teenage lust.
When they'd first started fucking about a month ago, it seemed like they did it nearly every day, sometimes twice a day. Things had begun to taper off a little recently, though they still spent time in each others' beds every couple of days or so.
The boy licked his drying lips as he watched the two high school girls and listened to the sounds of their pleasure. His cock bulged out the front of his jeans as his breathing became faster and his arousal grew. I wonder if…the boy thought to himself.
Turning and moving away from the door, the boy quickly stripped off his shirt and dropped it on the hallway floor. Next, his jeans and white underwear briefs rolled down his skinny legs and he stepped out of them.
Taking a deep breath and gathering a little courage, he walked naked down the hall a couple of steps and through the doorway of his bedroom.
Neither girl was aware of his presence for a moment as he stood a couple of feet inside the door and continued to watch what was happening on his sister's bed. His prick pulsed slightly as it sat up, straight and erect, from the small patch of dark curly hair that covered his balls and lower belly. The boy reached down with his right hand and gently stroked the hardened shaft as, again, he slowly approached the two girls.
Kristy was the first to notice her brother's presence, but she didn't give a damn who was in the room or who saw had was happening to her. She only knew that it felt so good, and she could feel the signs of an intense orgasm beginning to well up from between her legs.
The girl looked up at her naked brother and smiled at him as he slowly approached her bed.
"Hi, little brother," she said, her voice soft and dreamy.
Startled, Carrie twisted her head around and came face to face with the naked young boy.
"It's OK," Kristy reassured her, "Eric knows what I've been doin'. In fact, we've…been doin' things too….you know, together."
"Why, you little shit," Carrie said with a grin, "you mean, you've been fuckin' your brother, too?"
Kristy nodded, yes.
"And here I was, thinkin' I was the only girl in this down fuckin' her brother."
"You, too?" Kristy stared at her friend.
"Sure. You remember me telling you about that high school guy that popped my cherry in eighth grade and how he was a friend of my brother? Well, right before they went off to college together, the guy came over one afternoon for one last, quick fuck. We were goin' at it in my bedroom and I didn't think anyone else would be home for a while, so I didn't even bother to shut the door. Anyway, I'm on my back on the bed with my legs wrapped around this guy as he's pumpin' me and I look up at the door and see my brother standing there watching us."
"Holy shit! Were you scared about gettin' caught?"
"Hell, no. I mean, he made no secret about all the girls he'd been fuckin' throughout high school, why should I hide it?"
"What did he do?"
"Well, he watched for a while, and I looked at him so he knew I saw him watchin' us. Then, he just went to his room. When the guy that was doing me left, I put on my bathrobe and went to see my brother and talk to him about it. I just didn't want him telling my parents and stuff. I found him in his room looking at this porno magazine with his hand down his pants jerkin' off. I told him I'd do him with my hand if he promised not to tell mom and dad about what he'd seen me doin'. One thing just kinda led to another, and we ended up fuckin'. Ever since then, whenever he's home from college, we've been doin' it." She giggled. "He's really good, better than most of the boys at school. He gets me off every time, sometimes twice before he cums." She smiled. "I think he's gonna like my shaved pussy. What about Eric? He any good?"
Kristy didn't quite know how to answer the blunt question.
"Yeah, I think so…"
Carrie turned her head around and looked back at the naked thirteen-year-old boy who stood above her, his hand holding and squeezing is hard, fleshy shaft.
"Well, I'm gonna get your sister off, but my pussy's gettin' real hot.
Why don't you show me what a little boy like you can do to a big girl like me?"
Eric was eager to accept the challenge. He had admired Carrie's shapely and sexy body for a year now, especially when she came over to the apartment wearing her cheerleading outfit. The short skirt that showed off her long, slender legs always made him especially horny and, as soon as he could be alone, he'd get his porno library out and jerk-off into his pillow. He had fantasies about fucking the shapely high school girl, and now they were about to come true.
The young boy paused a moment and looked down at the kneeling girl trying to figure out just how he was going to do her. Carrie was kneeling on the floor with her upper body laying across his sister's bed, the lower half of her body naked. Thinking about the dirty magazines he often looked through and remembering the pictures of kids having sex in lots of different positions, he finally saw what he could do.
Eric stepped up behind the kneeling girl and, careful not to step on her legs or feet as they extended across the floor behind her, the thirteen-year-old boy positioned his feet just outside of Carrie's legs.
Then, putting his hands around the high school girl's waist and squatting down, the boy brought his cock level with Carrie's ass. He leaned forward and pressed his loins against her behind and ran the length of his pulsing little prick up and down through the deep crack of her behind.
God, it felt good.
The boy noticed, for the first time, the way the girl's pussy was free of any hair and he paused to examine the unusual sight. Already, the sex oil from her pussy was dribbling out of her slit and making her bald pussy folds shiny and wet.
Overcome with lust, the boy pressed his shaft against her cunt again, this time trying to get the tip to pop into her fuck hole. But, the angle wasn't the best, and the boy finally had to let go of Carrie's waist with one hand, take his cock in his fingers, and tilt it down level with the floor. He aimed his cockhead at her hairless slit and again pressed his hips forward.