All characters indulging in sexual acts are of legal age.
My younger sister came home late from a party one night, showered and went to bed. It was hot and humid. I knew she wouldn't wear much to sleep in and I hoped she'd sleep on top of the sheet with no covers. I'd sneaked in many times before to try to see her tits or pussy, with limited success, but often just the hint of a nipple or the curve between her legs was enough to send me off to my own bed to jerk off.
We're the same age, 18, but not twins. Poor mum had us eleven months apart. Everybody told us my dad was an asshole and thankfully he died when I was three.
Janine had just turned 18 and this was only the third time mum had let her go to parties where booze was served. But Janine didn't drink much anyway, except I think this time she'd had a bit more than usual.
After waiting long enough to make sure she was asleep, I took my trusty mini-torch and sneaked in. As I'd hoped, she was on top of the covers, laying on her stomach as she often did. She wore a thin, light-coloured cotton nighty that came to her upper thighs. She snored lightly. Probably a bit drunk, I thought - she never snored, so I felt bolder.
Janine is five feet 9, with curly brown hair to her shoulders and fair skin. She's a little plump, so her raised butt was round and enticing. Sneaking quietly to the foot of her bed, I was delighted to see partly-open legs. Being a little thick, they were touching from mid-thigh up but my torch showed me she wore no underpants: I could see her bare bottom cheeks.
This was already a good night, but it was to get way better. Feeling sure that Janine was a little drunk, I lifted the hem of her nighty and there it was; a puffy little pussy, nestled between her fleshy thighs, and best of all it was entirely smooth, as if she'd never had pubic hair at all. My cock throbbed and twitched, but I did not jerk off. I had other ideas.
Incited by lust, then and there I resolved to try to get my dick in her. Obviously I couldn't just lay on top and go for it. I needed a plan. I blew cool air on her pussy and was rewarded with a snort and slight parting of the thigh as she bent a leg. More pussy, more lust. I squeezed my cock through my boxers, then just simply took them off. I had no need for them this night.
Kneeling between her knees, I froze as the bed creaked, but Janine didn't stir. I lowered myself on both arms until my cock brushed her outer lips. Her heat drew me further into lust, so I pushed gently. Straight away I was past her outer lips, in her warmth, but she was only moist and the friction stopped me. My virginal mind leaped to an idea. The stuff that coated my cock when I wanked was slippery. So I pulled back my foreskin, rubbed gently, and was rewarded with a few millimeters more of warm pussy.
Perhaps the humid night helped, perhaps my sister had started an erotic dream. Whatever it was, she became wetter and I was able to get half my seven inches inside.
She moved, and I froze. She muttered something inaudibly, shifted her butt and in doing so pushed back at my engorged cock causing most of the rest of it to disappear inside her. Frozen in fear, I waited for a few seconds, but soon my lust overcame the fear and I became aware of the wet heat inside my sister.
