Playing Doctor With Sis

I love reading the stories on this site. I am a thirty-year-old married male who still enjoys jerking off. I've done a lot of crazy things and so far the only person I have told is my wife.

She gets off on my stories, and likes to jerk off watching me jerk off. We have been together for more than 10 years now and feel totally comfortable with each other. I really like jerking off in front of her, sometimes I jerk off kneeling over her with my dick inches from her eyes. Sometimes I jerk off right over her pussy as she jerks off. The stories my wife likes the best are the ones relating to my sister.

My sister is two years younger than I. When I was about 12, my parents felt I was old enough to stay home and babysit while they were out. It wasn't long before we were playing doctor on a regular basis.

We sorta had a routine. My sister would lie on the couch. She wore this long nightie, which she could pull up and down in a flash. So with her nightie up around her neck I would kneel down on the floor facing her from the side. With one hand I would rub my dick against the smooth fabric of the couch and with the other I would massage her pussy. We would do this for what seemed like hours. The room would fill with the smell of sex and yet my parents never seemed to catch on. Eventually I would cum and have to stop rubbing her. At this point they were all dry orgasms, no mess. I know she must have enjoyed it too because sometimes she would buck so hard under my hand that she would get a foot cramp and we would have to stop.