I knew that AM (as she liked to be known) was fond of my sister. Since Dave was at basketball practice, I figured that AM had come over to wait for hi...m. Ann Marie's father had been an important diplomat. While not holding a post currently, he worked for a "think tank" and spent a lot of time away from the home. Likewise, her mother was almost never at home. She was involved in a number of charities and was somewhat of a social butterfly. She never tended to alight at their house much during the. Put it…in my ass…” I said shyly. “Shit, you’re a bad girl. Can you take it?” He didn’t wait for a response as he began to re-position himself. Challenging him, I said, “Try me.” He withdrew his cock from my sodden pussy and purposefully aimed it at my asshole. I braced myself for the stabbing pain that was sure to sting before pleasure set in. His saturated shaft made his entry smooth and he sunk in nicely, with just enough pressure to pry open my reluctant star. Before long, he was lodged. She bobbed up and down slowly on it a few times, then pulled out until just the head was in her mouth again. She sucked and stroked my cock the swirled her tongue over it, repeating her previous technique. Each time she would go down, she took a bit more of it into her mouth. I started to moan, "mmm, that feels good, baby." She clamped her mouth just a little tighter around my shaft. I was about to let loose, "I'm getting ready to cum," I groaned. With hearing that she picked up her pace. She. ’ I slipped my cock out of the thong and stood close to one side of her, almost pressing the tip of my cock against her shoulder and began to piss down the dress; the pale material darkening as it became wet. I stopped and admired my handiwork, then moved towards her front. Aiming at her chest I began to piss more freely, the satin quickly becoming soaked and clinging to her curves. She raised her hands and began to massage her breasts through the wet satin as I peed over them. .