One weekend, my stepsis and I were alone at home, and I wanted to invite my friends over for a party. She was hanging by the pool in and told her all about it and of course, she started bitching about it like she always does. She offered me a deal that I leave her alone the entire weekend and get to fuck her in return. It was hard to believe the words coming out of her mouth so I left it that way. She asked me to oil her big ass and went down on all fours sticking her ass up obviously teasing me to get her way. I couldn’t stand just watching so I took off her bottom and began oiling that thing like crazy. She surely had the most well rounded ass cheeks with a nice thick set of pussy lips and a big prominent ass hole to go with it. The next thing I knew my stepsister took off the bikini top and left naked in my arms on the lounge chair with my hands over her small tits. She loved it so much that she gave me a blowjob all way to the deep throat enjoying slowly in my dick hard as a rock. Then she was in a cowgirl position where her bubbly ass all shiny was bouncing each time I ram my cock ball deep into her tight pussy. In a doggy style, I had the best POV on her fat ass because she could twerk around my tool knowing it’ll drive me crazy. After a while, he wanted to cum so she turned to face me in a missionary and began masturbating to make her dirty cunt reach an orgasm. She looked ecstatic at that moment and her body was trembling from the sensation. I couldn’t stand any longer so I had to take it out. My naked sister got down on her knees wanting me to unload all over her face.