She giggled as I hand cuffed her hands behind her back to the bed post.
“is this too tight?” i asked.
“nope” she said bubbly. I tighten the cuffs and she yelped with pleasure. I pulled her shirt up, revealing her lace bra. I kissed the exposed part of her supple, breasts. I tried to take her bra off before realizing that I couldn’t, given the way her arms were positioned.
“maybe you should have thought of this before you cuffed me, genius,” she said.
I undid my pants, pulling my hard cock out. “shut up, or I’ll make you shut up,” I said to my sister, slapping her in the face with my dick. She stuck her tongue out at me, her mouth watering at the sight of my cock. Spit dripped down to her large pale breasts.
“try me,” she said, teasing me by licking her big puffy lips. I shoved my cock into her mouth. She took the whole 8 inches, gagging as it went down her throat. I fucked her mouth, in and out until she couldn’t take it anymore. I pulled my dick out, covered in spit.
“Don’t you love it, big brother? Don’t you fucking love it when your dirty little sister wraps her soft puffy lips around your cock? Doesn’t it feel so wrong, but so good” she whispered as more spit fell from her mouth. She giggled as I slapped her face again with my cock.
“someone needs to be punished,” I said as I undid her cuffs. I spun her around and picked her up so she was facing. Her arms were wrapped around my neck and her legs around my waist.
“remembered when I used to pick you up and run around the yard like this” I said, cuffing ankles together behind me and her hands around my neck. “now I’m gonna fuck you the same way” I said, kissing her lips.
“this is so dirty and wrong,” she exclaimed. “but it feels so good. I need it baby. Fuck me please, big brother. I need your big fat cock in this tight little pussy right now” she whimpered.
I ripped apart her panties and teased her pussy lips with my cock. She begged for my cock more and more. I positioned my cock and pushed her down onto it. She threw her head back and let out a loud animal like moan. I fucked her hard,feeling her nails against my neck. She couldn’t hold onto me when she reached her climax. She let go of the back of my neck as her back arched. Her full weight was on the handcuff chain that was digging into the back of my neck. I pulled her close, feeling her hard nipple in my chest. I passionately kissed her lips. I bit her bottom lip as I pounded her.
I pushed her onto the bed. I fucked her harder until we climax together.
“I’m gonna cum” I said with a moan. She pulled my hips inwards with her legs wrapped around me.
“then cum inside me” she said. I obeyed and unleashed my hot cum into her pussy. I fell asleep with my cock still in her and her legs still around me
Source: reddit.com/r/sexystories/comments/4b6o09/mf_fucking_my_sister