I come from a big family and because of this we never really had any privacy and often times we had to sleep with another person. It was never a problem for me until I got older and started waking up every morning with a hard on. Ocassionally one of my brothers would have a friend over and I would have to sleep with my sister that is one year older than I am. We never had sex but we would touch each other from time to time. She never got me off and I never got her off though. One morning I had gotten up early to go hunting and as usual my dick was hard as steel and needed relief. I was in the bathroom playing with my self when I thought about going back into the bedroom and watching my sister sleep while jerking off. I eased back through the dark house and when I got to her side of the bed I pulled my dick out and slowly started stroking it. I had been stroking my cock for a few minutes when she opened her eyes and asked me what I was doing. I quickly tucked my dick back in my shorts and said something about climbing back in bed and not going hunting. She closed her eyes and rolled over with her back to me. I started to finish but decided I better do it in the bathroom. I went back and finished jerking off wandering if she had seen me. I came so hard it hit the mirror. I miss those days.