"Billy, come here!" my sister loudly demanded. "I need a favor."

So I stopped what I was doing and crossed the hall, not wishing to anger her since she was a tyrant when she was mad. She was flat on her bed, naked, one knee raised and smiling at me. I blinked at her and waited, feeling my cock tremble.

My sister is super hot, a high school senior with a killer body, a fine athlete and a real brain. She smiled at me and licked her lips. Her pussy lips were bulging out and quivering. I couldn't stop staring. She had shaved her groin completely hairless. Her curly blonde triangle was gone, sadly. I had loved peeking and her and admiring her little mustache of curls.

"Come here, Billy, and fuck me," she said calmly.

I about fainted. I mean here I was a fourteen-year-old virgin who had only had sex with his right hand and his pillow, and the girl I tried to avoid thinking about wanted me to mount her. I ran.

She followed, wearing a short robe that she didn't bother to close or belt and stood in front of my desk, showing me everything I longed to see. I fell in love with her soft belly.

"Listen," she said, sounding patient, "I've got all these guys dying to make love to me, demanding that I give it to them, a dozen hook ups just panting to drive me crazy, every single cock stiff and dripping. And I've never done it. I can't let one of them deflower me and go around saying he got my cherry. I've put them off with blow-jobs, which I hate, hate, hate."

"Why me?" I asked, my voice cracking.

She laughed. "You've got a cock, don't you?"

I nodded. "But I don't know anything. I've never done it. I've hardly even touched a girl. Why don't you use a banana or something?"

She sighed. "Oh," she said, scratching her head. "OK. I didn't think of that. Google it and then go down and buy some rubbers, some condoms, thin ones, hear? We'll do it Saturday when the folks go out shopping. That gives you two days to get ready." She turned and left, leaving me aching, my cock bent double in my pants. I was dying to bounce on her round, pink belly.

I took a handful of tissues to bed with me and filled them up after searching "how to fuck" on the Internet and watching guys mount girls and stick their pricks into them. One showed a boy who looked around my age licking this pretty girl's pussy, putting his thick cock in her mouth and then pushing it into her hairless pussy and humping herfor ten minutes or so before he turned her around and did it from the back. I couldn't believe it. And he didn't use a condom either and she seemed to enjoy it, all of it.

On the way home from school Friday I went to the grocery store with the check-out scanners and bought some Trojans, a three pack. It said ultra-thin and lubricated. I went home and Googled "how to use" and then slid one down my erection, carefully holding the tip and stroked myself until I came in it. It felt odd, very strange, constricted. I knotted it and threw it away, sure two would be plenty for my onerous task.

Saturday morning I heard the car start and drive away and there was my eager sister in her football jersey nightgown. "You ready 'cause I sure am?" She pulled back the covers and squealed. "Oh damn. It's beautiful. How'd you ever grow such a monster? Lord, I've never seen anything like it. How big is it?"

I rolled over and hurried to the bathroom and pissed, relieving the pressure. When I got back, she was lying on my bed, smiling. "Come on, big boy, come and get it."