Her hand covered mine and pressed softly but firmly against her flesh."I want to feel your pussy" I moaned into her ear full of eager desireShe took m... hand and guided it down between her legs, I pushed the thin piece of fabric that covered her crotch out of the way, exposing the soft full lips of her pussy. Wet heat rolled out from between her legs as I slipped one finger into her tight hole. She bit her lip and closed her eyes, appearing to enjoy the touch. I forced my index finger deeper. I was a little shocked, but didnt think too much of it at the time. It wasnt until three years later, when I was again at my dads while he was gone, that she admitted my sister was actually my daughter. This time, he was again away on business, but my step-mom had asked me to come stay with her during his trip. Dad, of course, thought it was a good idea for me to spend some quality time with my step-mother. This time around though, was quite different. It had been three years since our first. The next morning Jenny awoke earlier than I did. She lifted the sheets to see whether my dick had returned or not. It obviously hadn't returned, but I had already grown pubic hair again, so I'd probably be okay in a few days. Then I awoke and immediately grabbed for my willie, just to check that the disappearance had just been a dream. No dream, of course, but at least I now had pubic hair again and as I found out an adult vagina, as I now felt myself shivering when I touched my clitoris. I. The one time I'd fucked in my bedroom, thinking we were home alone, dad had the entire event on tape. From then on dad had seemed to encourage mom to help arrange a time when he'd actually get to fuck me. When I called and told them I was going to be home for this spring vacation, they'd put plans into action. Last night unknown to me, mom had spiked my dinner with 'Spanish Fly' They knew I loved sex, and hadn't had any in over a week, so figured the 'FLY' and my natural horniness would work to.