Mmmmm, that felt good, in fact, that felt really good. Somebody was touching my cock, hands wanking me off. I was just waking up, groggy and not sure where I was, a raging hard on between my legs. I tried to move my hands down but couldn't, my legs too wouldn't move.
It was coming back to me now, I was handcuffed to the bed, naked, my hands up over my head, my legs were tied to the bed posts. My girlfriend had put them on, my parents were away and I thought my luck was in, some early morning kinky sex. Then she started shouting as she told me she had heard about me cheating. She stormed out and left me here stuck to the bed, I must have drifted off after a bit.
She must have come back though because that felt good, hands caressing my cock, fondling and exploring my balls. I opened my eyes and looked down.
That wasn't my girlfriend.
"What the fuck sis," I shouted.
There, with her hands wrapped around my cock was my younger 18 year old sister Jenny, staring up my naked body at me, grinning.
"Get off, you're my sister," I continued, "what the fuck are doing?"
She blushed, and brushed her long dark hair behind her ear. "I want it," she said.
She continued to move her hand up and down my shaft, my throbbing 7 inch cock looked huge in her hands. She could barely fit her hands around the thickness.
I tried to wriggle free but it was no good, part of me didn't want to get out, enjoying the feel of my cock being stroked.
As she wanked me off with one hand she cupped my scrotum with the other, squeezing them and rolling my balls in her fingers. I groaned.
"Oh god, please stop sis," I pleaded.
"But you like it," Jenny said, "I just want to play with it."
She was staring up my body into my eyes, a shy smile across her pretty face. She was playing with a bit of precum on the head of my penis. She bent forward and licked it, and then ran her tongue up and down my shaft, occasional kissing it.
She moved back up and took my cock in her mouth, her lips open wide as she forced me in, pushing her head down. She couldn't take much of me in but it felt so good, my cock hitting the back of her throat.
She started bobbing her head up and down, her long black hair falling over her face, she pushed it behind her ear and over her shoulder. She ran her hands over my six pack abs, and then back to my cock, wrapping her hands around the bottom of my shaft and stroked whilst her mouth continued to swallow me in.
She continued this for a while, I was now unable to argue, it was too late. I would have to have a serious talk with her when this blowjob was over, thinking that was as far as it was going to go.
Boy was I wrong. My sister took her mouth off with a pop, her saliva covering my cock and stringing out between her lips and my cock. She let go and my cock slapped hard against my stomach.
She then crawled up between my legs, her body rubbing against my hard member, she continued up and straddled me, her legs open either side of my hips. Her mound was pressed against my rigid cock.
She was wearing black leggings tight against her skinny legs, no socks, they were low on her boney hips, showing off her flat stomach. My gaze followed her ribs up to her small breast, concealed behind a tight vest top, her nipples hard underneath. Her skinny shoulders and slender neck arched back.
She rubbed her pussy through her leggings against my cock, grinding it into me, the crotch pushed into her folds, my cock sliding up and down her now wet cunt, a thin layer of fabric stopping me from fucking my sister.
"This is so wrong sis," I said, "please stop before it's too late."
"It's already too late, I want to cum," she groaned.
She was breathing fast now, groaning with every thrust of her hips, building up a rhythm on my cock, faster and faster.
I watched her, I knew my sister was pretty but seeing her arched back, moaning, made me think of her in a different light. She had grown up into a sexy young woman. As much as I tried to fight it I felt my orgasm growing.
"Oh fuck," she said. Her hand went down over her toned stomach and down under her waist band, she started rubbing her clit.
This was the last straw, "I'm going to cum," I groaned. My cock twitched against her pussy and I erupted all over my stomach, stream after stream of cum covering my abs. My sister was still grinding down on me, furiously rubbing.
She watched my jizz spunking out and screamed in ecstasy, orgasming hard. I felt her leggings soak as she squirted her juices into them and onto her hand, her hips spasmed on my lap, her thighs shaking hard.
"Fuck, fuck, fuck," she groaned as she couldn't control her shaking body. She rolled off to the side, her legs crossed on her hand, holding her pussy, and she lay on the bed next to me, small shocks rippling through her body.
It was so hot, I watched her slowly recovering, my cock twitching and dribbling cum on to my belly.
She sat up and ran a finger through the cum on my belly, lifting it to her mouth and tasting it.
"Are you finished fucking about now, let me out of these handcuffs." I said.
"Yeah I feel better now," she said, smiling. Her face flushed red.
She got up and found the key on the bedside table, she undid one side of the handcuffs and ran out the room.
By the time I got my other hand free, untied my legs and got dressed, Jenny had disappeared. Her cum soaked leggings were on her bedroom floor, I couldn't help but pick them up and feel the wetness, I smelt in her juices. Fuck this was so wrong.
I was angry though, she shouldn't have taken advantage like that, she was going to pay for that stunt.
I heard her come home sometime later in the afternoon whilst I was in my room. I left it a little while and then went downstairs.
I found her in the utility room putting her leggings in the washing machine. She was bent over with her small pert ass on display and sticking in the air. Perfect I thought.
