"You bitch," I responded grabbing her tits again, but she pushed my hands away and pulled herself out of her sleeping bag exposing to me her plump round ass and as she was moving things around she bent over and I saw the wettest and harriest pussy I'd ever seen. She turned and looked at me as I gazed into her holes and she smiled. I reached over and ran my finger across her dripping labia and then I stuck my wet finger in my mouth.
After she got her sleeping bag open, she turned her back to me and lay on her side again. She backed her ass up and now skin to skin began rubbing her ass up and down my cock. I could feel her wetness dripping onto my balls. "Do you want to fuck my pussy, Jim?" she asked, "Do you want to fuck me with my sister your wife right next to you? Have you ever fantasized about this pussy before?" I didn't want to wake Becky so I just reached my arm around her waste and pulled her body tighter to me.
Then I felt her hand reach down and grab my cock and gently slide it into her love hole. She was so wet I barely had to push to get all the way in. She spread her legs wide open and pushed herself up and down with the one leg. I kissed her on her neck and fondled her breasts as I fucked my chubby sister in law slowly for about fifteen minutes. Then I started to pump faster until I blasted her full of my betrothed semen. I moaned as quietly as I could and then I pushed my cock up her as far as I could get it and held it there. I started to feel Stephanie's pussy muscles contracting rapidly around my spent sperm uzzi. Then she bucked hard and pushed me into my sleeping wife and suddenly she let out a loud and long moan followed by a high pitch squeal. My cock and balls were drenched in her excitement.
It was then that I felt another arm reach around me and grab my dick. It was my wife's. She yanked my dick from her sister's hole and yelled at me at full volume, "What the fuck are you doing?"
I tried my best to lie and tell her that I thought she was my wife and I had been sleeping, but I've never been a good liar. I was scared shitless when Stephanie said, "That's what you get for fucking Peter!"
It turns out I was a pawn. My wife had cheated on me with her sister's boyfriend, and Peter told Stephanie about it and so she had planned the whole entire seduction to get even with my adultress.
Since that night, Stephanie and I have become good friends, and my wife lets me do whatever I want because she is so guilty about cheating on me. The two women just scowled and remained silent for the rest of the camping trip, but I'd say it was worth every second and drop of come. My only regret is coming inside of my sister in law, because the baby is due on the 12th of May.