John peeked through the hole he had made in the closet wall connecting his room to his sister's. He could see his sister in her room beginning to undress for bed. As he became more excited watching her undress, John dropped his pants and pulled his cock out, holding it in his hand. Even though Jenny was only 19, John knew that she was already mature physically, with big full tits and a pussy that could clearly be seen through the sparse red hair growing there.
John was only a year younger than Jenny and big for his age, so most people thought he was the older of the two. He had made the hole in the closet about three months ago and had been regularly watching his sister in her room. He had been surprised to find that Jenny liked playing with herself, squeezing her tits and pulling on her nipples, trying to lick them, and that she played with her pussy, sticking her fingers into it and also in the last couple of weeks a big black dildo that she had gotten somewhere. John got so hot watching Jenny that he would regularly masturbate, trying to cum when she did. Because Jenny almost never closed her closet door, John was usually able to see her, like tonight.
Slowly he pulled on his cock as he watched Jenny undress. When she had pulled her shirt off, she cupped her tits in her hands, hefting them, weighing them, squeezing them. John knew her routine almost by heart. Then she pinched her nipples in her fingers and pulled on them, twirling them. Very quickly John could see them harden, knurling into knots on the ends of her tits. Jenny hefted one of them upwards, sticking out her tongue and flicking it at the nipple, just barely able to reach.
Then Jenny wriggled out of her jeans, pulling them off and revealing that she wasn't wearing any underwear. This had been going on for about two weeks now. It had really excited John the first time he realized that Jenny hadn't worn any underwear, going out with just her clothes covering her.
Sitting down on the edge of the bed facing the closet, Jenny spread her knees wide apart and rubbed her hands in her pussy. John almost died on the spot when Jenny's hands came from her pussy, pulling the big black dildo out. He couldn't believe that she had been in school all day and eaten dinner with their parents with that big black dildo jammed up into her pussy.
Suddenly John began to cum, splashing all over the closet wall as his balls exploded while he watched his sister. Jenny slid the dildo in and out of her pussy several times, then pulled it all the way out and brought it up to her mouth, opening it and sliding the dildo into her mouth, sucking on it, licking all of her own pussy juices from the dildo.
John was still furiously rubbing his cock, staring at Jenny's wide open pussy staring at him, only about ten feet away. He could see her pussy lips pouting open, revealing her clit sticking out from between them and her hole, pooling with moisture. After sticking the dildo back into her pussy and ramming it in and out several times, Jenny licked it off again and turned off the light, ending John's show.
John groaned as the light went out, depriving him of his entertainment. But he had cum once, he smiled to himself, and really busted a nut. God, Jenny was great, he thought. He wondered if she had ever been with a guy yet. Probably, he thought. She was probably the horniest person in the whole world, the way she had been carrying on. No, John corrected himself, I'm the horniest person in the whole world.
And Jenny never acted any different. She was still the sweetest sister in the world, always helping him if he had any trouble with his schoolwork, a cheerleader, straight A student, teacher's pet, the whole nine yards. And yet she was so beautiful and perverted, John thought as he climbed into bed. He couldn't wait to get come pussy for himself one day.
The next day John was at the hole in the closet waiting when Jenny woke up. He watched as she stretched, throwing the covers off, then pulled up her knees and spread them wide, her hands going right to her pussy. John watched as she rubbed her clit, slowly, and gently slid several fingers into her pussy as she masturbated. When she finally came, John did too, this time catching his cum in his hand and using it to lubricate his cock as he continued to pump it in his hand. Then Jenny jumped up and went to the shower.
Cleaning himself up, John got dressed and went out of his room to have breakfast with the rest of the family. His mother Jean was such a beautiful woman, John noticed again, her long blonde hair reaching down to her waist. She had such a beautiful smile. His father Jack was tall and red-headed just like Jenny. He had a great sense of humor and John loved it when they would go camping or hiking in the mountains together.
As John and Jenny walked to school together, John began to have the beginnings of an idea in his head. Money was always a little short and he was constantly thinking of ways to get just a little more. Now maybe he had an idea. He hadn't told any of his friends about Jenny, mostly because he was sure they wouldn't believe him, but also because he didn't see any advantage in his friends knowing that his sister was such a horny, sex pervert. Now maybe he could solve all his problems at once.
Once at school that day, John pulled his two best friends aside, Harry and Tom, and asked them if they had ever seen a girl totally naked. Their surprised expressions told him the answer to that one immediately.
"What would it be worth to you if I could guarantee that you'll have a perfect view of a naked girl from only ten feet and that she wouldn't know about it?" John asked.
"I'd give you all the money I'll make for the rest of my life," Harry said excitedly. "But you couldn't possibly deliver so it's a dead issue."
"But what if I tell you I can deliver," John continued. "How much would you pay?"
"How long would we get to watch?" Tom asked.
"Well, probably five to ten minutes," John said after thinking about it for a moment.
"Just to see a naked girl?" Harry asked. "What is she, twelve years old?" he asked, laughing hard.
"No, she's nineteen and beautiful, and if you come up with the right money, I'll even guarantee that she'll play with herself too," John said. "So, what do you think?"
"Shit, I'll pay to see that," Harry said. "I'll give you $20 if you let me see that."
"What about you, Tom?" John asked. "You willing to pay to see it too?"
"I guess so," Tom said. "But what if it's not what you say, then what?"
"Then you don't have to pay me," John said. "In fact, I'll let you pay me after, that way you decide if I was telling the truth."
"That sounds fair to me," Tom said. "I'll give you $20 if it's as good as you say."
"Great then," John said, thinking of the $40 he would make. "What you have to do is get your parents' permission to spend the night at my house, then I'll be able to show you."
"How about tomorrow night then?" Harry asked. "I'm sure my parents won't mind."
"Yeah, I think my parents would let me tomorrow night too," Tom said.
"Great, then tomorrow night," John said. "I'll talk to my parents and make sure, but let's plan on it."
"Great," Harry said, jumping up excitedly. "I can't wait."
That night as John watched Jenny again, he couldn't contain his excitement at watching his friends see her without her knowing about it. And $40, that would sure help. As he expected, his parents had no objection to him having two friends come over to study and spend the night, so the next day after school both Harry and Tom came home with him. They spent the afternoon studying, to keep up pretenses, and after dinner used studying as an excuse to go to John's room.
"So, when are we going to go see this naked girl?" Harry asked impatiently.
"It won't be long now," John said with a smile on his face. "Are you sure you're ready for this?"
"Quit wasting time and get on with it," Tom said. "Or is this just some bullshit?"
"No bullshit," John said. "In fact, we can start getting ready."
Moving over to the closet, John opened the doors, first turning out the light in the room. Motioning to Harry, John pointed out the hole in the closet wall.
"You just keep your eye on that hole," John explained, "and in just a minute or so it'll start."
Tom just looked at him as Harry bent to the hole, putting his eye to it. They all waited, fidgeting as nothing happened. Then suddenly Harry gasped.
"Hey, it's your sister," he said.
"I know it is," John said smugly. "Just keep watching."
"You mean you're talking about your sister?" Tom asked him incredulously.
"Uh-huh," John said. "And you won't be sorry either."
"Your sister," Tom said, shaking his head in disbelief. "I can't believe you'd sell a peek at your own sister."
"Why not?" John asked. "She doesn't know and it won't hurt her. And you said you'd pay $20 to see."
"Oh, wow," Harry whispered. "She's taking off her shirt. What outrageous tits! Man, they are beautiful."
"Let me see," Tom said, suddenly interested again.