See sam was embarssed about haveing a crush on his step sister he knew that this was wrong not natural but sick in a sense but she just turned him on ...er curves the shape of her ass every thing about her turned him on he would often masterbate to the sent of her dirty pantys and fantasize about fucking her really hard in the ass and the mouth well this was the chance he had been waiting for and he wasnt going to let it slip by seeing that his s*s was growing he asked her if shewanted to play. So, he proceeds with a moderate stroking of his dick, and I see it as it swells up bigger and bigger. After a while Matthew starts really stroking his dick pretty hard, and fast. He gets faster and faster, and raises his butt up from the bed, and then --- bamm !I was fascinated beyond de***********ion at all the 'stuff' that comes shooting out of Matthew's dick. I didn't know what it was, but I did know it was a lot. The first three shots went sailing clear over his head, hitting the concrete. I felt my pulse speed up and my senses stirred. I walked over to her and stood behind her. She felt my presence and without turning put her right hand behind and pulled me closer. I put my hands on her shoulders and massaged them because I know she likes that. “Such a lovely day I can’t imagine having to go back to work tomorrow.” I said. “Just enjoy the moment never mind tomorrow.” she replied, as she hates to plan too far ahead. As I silently agreed with her so did my body. I felt my cock. She held both my hands and put them on her tits and started grinding her crotch against mine. This was getting too hot for me to handle and my dick was straining to come out. She realised my discomfort soon but continued grinding her pussy against the length of my dick. Suddenly she got up and undid my jeans. I got the message and pulled them down along with my boxers.She got rid of her panty held my dick in her hand and guided me towards her pussy. I moaned as I entered her wet pussy. She held.