When he came home from the orgy, Brad was feebly trying to make it up the stairs through the darkened house to his room when he heard faint noises coming from his sister Kelly's room. He cracked her door open a slit to see what was going on with his sister. Speaking of slits, he couldn't believe his eyes. In the faint moonlight from the window, he could see her with legs spread wide, trying to jam Mr. Fleece, her teddy bear, as tightly as possible against her pussy and moaning as lewdly as any of the girls he had just left. Even with the numberless times he had shot his wad since the last class at school, he felt his dick start to harden. Ever since Kelly's body had begun to fill out, he had wanted to get a good look at her tits, but she always was careful around him.
Watching her wrap her 18-year old legs around the toy bear she had slept with since she was a child was really getting to him.
He slipped into her room as quietly as possible and approached the bed without being seen. He was afraid that she would wake up everybody with a scream if he didn't stop her, so he quickly put his hand over her mouth until she could see who he was.
"BRAD!!!" she hissed. "WHAT ARE YOU DOING IN MY ROOM. GET OUT OF HERE!" She was trembling with fury, embarrassment and pent up lust.
"Don't worry, kid. I know what you're going through. I was a virgin until two days ago and look at me now." He whipped his now hard dick out right in her face and waved it back and forth. Little drops of honey began to form at the tip in anticipation of another dip.
Kelly's eyes got bigger. She knew she shouldn't be seeing this thing, but she was so horny she didn't care. "Can I touch it?" she whispered.
"You can touch it, suck it, play with it or any thing you want to do with it. Just be careful if you don't want to get a face full of cum."
"What's cum?" she wondered as she hesitantly touched his distended prick and began to stroke it.
"It's the stuff that shoots out of it if you keep doing that," he answered.
"Oh," she said, in a quiet voice. "The told us about 'semen' in Sex Ed. Is it the same?"
"Yeah. It's just another word for it. If you want to see some, just lick the bottom of the head a little while you stroke it like you're doing and you'll see it pretty soon."
Kelly was fascinated. She had read all she could about sex, but the books she could get were not enough to help her understand how it all worked and her body wanted to know. She licked where her brother told her and put both hands around his mighty shaft to stroke the skin back and forth like he showed her and soon she felt him tense and start to shudder.
"Watch out!" he warned, as the stream began to splash in her face, on her cheeks, in her mouth and all over her naked body.
Kelly swallowed the bit in her mouth and liked the taste, so she put her mouth over the hole in the end of her brother's prick where the stream was coming from and soon had such a mouthful she had to swallow to breathe. The taste was fantastic! Nothing she had read or been told had prepared her for the idea of tasting 'semen', but she liked it immediately. She continued pumping her hands up and down his prick and swallowing the flood until it trickled to a stop.
Brad collapsed in a heap on her bed, his balls aching from being called on one more time after all the fucking he had done tonight.
"Wow, Brad, that was great! Will you 'intercourse' me, too?"
"I don't know, Kelly. You're my sister and I don't want to hurt you. You're still a virgin and it's supposed to hurt girls the first time they do it. Besides, you're pretty small down there and my dick might be too big."
"Oh, you're just like Daddy. All he wants to do is put his penis in my behind. He never lets me see it and he runs away as soon as he finishes. I always have to go to the bathroom as soon as he leaves."
"Dad fucks you in the ass, no shit?" Brad was incredulous. He couldn't imagine his father molesting his own daughter. He was a harsh man, but Brad never suspected he was doing anything so unlawful. The thought of it was reaching his balls, however, and starting to make his prick jump again, even though it was beginning to get really raw from all the use.
Kelly was still idly stroking his prick and noticed it beginning to swell as soon as she told him about Daddy. "Is that what you call it, fucking?"
"Yeah, that's what we call it. Tell you what. If you are used to taking Dad's prick up your ass, I'll show you a trick the cheerleaders taught me tonight."
"You were fucking a cheerleader?" Kelly's dream was to be a cheerleader. She so admired their cute uniforms and all the attention they got. It must be heaven to be one of the chosen few.
"I fucked all of them tonight."
"All of them!"
"Yeah. Now let me stretch out under you and bend my knees up so you can lean back against them. Now smear some of the juice from the tip of my prick onto your asshole. When you're ready, sit on my prick and try to relax and let your weight push it into your asshole.
Kelly did as he instructed. Her heart was beating really fast. Although her father came into her room fairly often and used her, her never let her be part of it. He wouldn't let her see anything, didn't do anything to prepare her or to make her enjoy it. Now Brad was teaching her and treating her like a cheerleader! She would do anything he asked.
She felt the familiar sensation of a prick sliding up her ass, but this time it didn't hurt like the other times. Brad's prick was much larger than Daddy's, but the way they were doing it now, with a little preparation and consideration for her feelings made all the difference. It was making her very excited. She felt the big head finally slide past her sphincter and waited a few seconds to get used to it, then slowly let her body slide more and more of her brother's prick into her bowels.
