Steve Masters - Mom_s summer swap camp

But all of that, at least as far as Billy was concerned, changed on that fateful night when, forgetting to knock, he stepped into her bedroom to ask to borrow a pencil for some homework he was doing.

Mavis had been out with some friends that night and the house was quiet, but it was still early and Billy had no reason to suspect that his sister would be asleep yet. Without a father, and with their mom gone working most of the time, the two children had grown quite close, closer than most kids, in fact, and they were almost as much friends as brother and sister. And so it was without a second thought that, with a cheerful smile on his lips, Billy opened the door to Debby's bedroom and began speaking before he was even all the way in.

"Hey, Sis," he started. "The lead in my pencil just broke and I was wondering if…"

And that was as far as he got. The smile disappeared from his face and the sight that met his eyes temporarily froze him in his tracks.

And what a sight it was!

Little Debby – virginal, thirteen-year-old Debby – lay stretched out across her bed, masturbating… and loving every second of it! The scent of her aroused, horny young cunt filled the room.

She was wearing a babydoll nightie of filmy, lacy cotton that stopped just above the panties. Only she wasn't wearing the panties now. They were in a tangled ball on the floor alongside the bed. With one hand she was reaching under the top of the nightie, playing with her nipples, and with her other hand she was wiggling her middle finger in and out of her dripping twat. Even from where Billy stood he could see that the fingers of her jerk-off hand were wet and slick with cum.

An open paperback book, a porno novel, lay on the bed beside her, but she wasn't paying attention to that now. She had passed that stage; she'd obviously been going at it for quite a while. Her eyes were clamped shut, her breath was coming in gasping, little-girl moans, and her hips were rotating and rising and falling in time to the finger diddling away at her clit.

"Ohhhhhh…" she was moaning. "Mmmmmmmmm… that's sooooo nice… mmmmmmmm…"

Billy couldn't believe his eyes. It had just never occurred to him that young girls jacked off too.

"D-Debby…" he blurted, his hand still holding onto the doorknob.

Her eyes jarred open. Her hand stopped diddling.

"Billy!" she gasped. "Ohh…"

They remained there like that for another moment, both of them trying to get a grasp on the situation, both of their minds reeling.

"Wh-what are you doing?" Billy asked dumbly.

She couldn't answer right away. "I-I…" she began, and then she gave a whimper. "Oh, my God…"

Billy closed the door and leaned back against it, and a little smile played at his lips. He was over the shock of discovering Debby, and his mind was quick to grasp what a painful experience this could be for her if he didn't handle it just right.

He stepped forward, still smiling. "It's okay, Sis," he said softly. "I-I understand what you were doing."

"Oh, Billy…"

He sat down on the bed next to her and touched her in a brotherly fashion on the shoulder.

"Heck," he added with a chuckle. "I do the same thing myself, all the time."

Debby had taken her hands from her pussy and boobs and had propped herself up on an arm to look at him. She was recovering from the shock of being discovered.

"R-really?" she asked falteringly.

"Sure," Billy said. "Gee, Sis, it's… it's something everybody does, only… only they just don't talk about it, know what I mean?"

"And… and you do it too?"

"I said everybody, didn't I?" He reached over and looked at the book. "And what's this my little Sis is reading? Swapping with Mother, eh?"

His grin grew wider as he read the title. "You wouldn't have the hots for our mother, would you?"

"Oh, Billy, no," she blushed. "Don't tease me. It was… it was just given to me by one of the girls in my gym class at school. I… I just started reading it and… I just… I just had to do something…"

Billy paged through the book. It did indeed seem to be an especially "hot" piece of porno writing. On nearly every page, it seemed, there were descriptions of hot thrusting cocks and wet horny pussy and swirling tongues and sweating, moaning bodies.

All of a sudden, Billy realized that Debby was giggling.

"Huh, what's that?" he said, looking up from the pages of the book.

"There," Debby said. "You see, you've got no right to tease me about that book. Look what happened to you when you started reading it!"

Billy looked in the direction of Debby's gaze, and he felt like blushing himself. Underneath the crotch of his tight jeans was the clear impression of a hard-on. But not a full-fledged hard-on just yet. It was just coming to life as he looked. It had been caused by one of the scenes he had glanced at in the book, and it was throbbing, growing, even as they watched it.

"I-I guess that proves my point," Billy said after some initial embarrassment. "See, the book turns me on too. Nothing wrong with that."

"I-I guess not," replied Debby.

"Heck, Sis, that's what happens to me all the time when I read these things. There's nothing wrong with it at all. Uhh, you, uh, wouldn't mind if I borrowed this book for a while, would you? To take back to my room…"

Their eyes connected and now it was Debby's turn to shoot him a slight grin.

"And what is my big brother going to do with the book when he gets alone?" she asked.

"Why… just what you were doing, of course," he said with a laugh.

The atmosphere of the room was completely relaxed now. Debby felt that she was one lucky girl to have a brother as together as Billy. He always seemed to know how to handle situations.

"All right, Billy," she said softly. "I'll give you the book… in the morning." She smiled. "After I've had my jollies with it."

"Fair enough, Sis," he said, standing, feeling that the conversation was over. "And… I'm sorry I barged in on you like that. I'll be a little more thoughtful in the future, I promise you."

"Thanks, Billy. I love you."

"I love you, Sis. Good night."

He turned and started for the door when a new thought hit him. It came to him completely by surprise, and he paused with his hand once again on the doorknob, not quite sure whether or not it would be cool to bring it up.

Debby sensed his hesitation.

"Billy… is something wrong?"

He turned slowly. "No, Deb. It's just that… well, I had this idea, but… no, no it's too kinky. I'm sorry, I shouldn't have said anything. I'll just…"

"Well you've got my interest up now, silly," she said. "What is it? Let's hear it."

"Well, uh… I was just thinking. Y'know, we're both pretty, uh, pretty excited right now…"

"Boy, I'll say…"

"And, uh, we're probably both going to be… uh, doing the same thing, right?"

"Yes…"

He closed the door and came back into the room to sit beside her on the bed once again.

"Well, I was just thinking," he said slowly. "Do you… do you think it would be too weird if we… if we did it together… if we made ourselves cum while we… while we watched each other do it?"

Debby couldn't say why, but the instant she heard the suggestion, the nipples on her little titties grew hard all over again and she felt the walls of her small, tight pussy grow damp with new juices.

"Oh, Billy…"

"Let's do it," he pressed. "Sis, I feel like we're really close now, after tonight. And, after all, sex is to be enjoyed, isn't it? And it's not like we're doing something really kinky. Heck, we don't even have to touch each other. I just… I just think it would be really a turn-on to watch each other get ourselves off."

"It… it does sound exciting," Debby admitted in a small voice.