I could see deep into her gaping asshole. It opened and closed over and over getting smaller, little by little. I could hear her whimpering. "Cum in m... asshole" she said, reaching back with her hands and parting her cheeks once more. Forcing my thick cock back in, her tight shit pipe clutched at me but I was determined to conquer her again. I pounded away at her stretching ring and growled at her in a****l lust. She was yelling and screaming and cursing in Russian at me. "You nasty fucking cum. I guess that's why I'm so horny."Suddenly I flashed back to our conversation with Dave's doctor. We still had to go back for the sperm count tests. He said that for a few weeks after the procedure Dave's reproductive tract could still have sperm in it. It had been only a week since the vasectomy and, due to some swelling, this would be Dave's first "post-snip" sex. There was a chance that he was still potent!To this day I still don't know why I did it. I paused and thought about what might. Tina's bottom was spread open enough for Tracy to be able to watch in fascination as the dildo attached to Tina edged back and forth with Melody's quim lips stretching to allow its entry. Still out of sight of both women Tracy took up a large pot of Vaseline and smeared the end of the dildo with the slippery contents before calling softly to Tina "are you ready for it my little equestrian?"Tina was almost lost in concentration as she slowly fucked her neighbour, the pressure of the straps and. She didn’t want to, she tried to fight it, but she could feel her orgasm beginning. As her moans became louder the sergeant laughed. “See the American SLUT wants it.”He grabbed her hair. “Scream Bitch.” The commandant picked up the pace fucking her hard and fast.It was how Amanda liked it.“OH God. Yes. Fuck Me. Harder.”The commandant leaned into Amana. Giving her every last bit of his cock.The Sergeant yanked her head back by the air. “lounder.”Hearing her scream the commandant tried to hold.