Our parents were 60s hippies. They looked at the world different to most folks. When I was about 10 or 11 mom and dad got divorced. My sister who is three years older than me and I stayed with mom. We were wanting to go swimming one evening and asked mom if we could. She said go ahead she didn’t care. We started to go in the house to get our suits. My mom said why don’t you just jump in and skinny dip. We looked at each other and then looked back at mom and she said I used to do it all the time with my brothers and sisters. So me and my sister went to the pool and stripped down to nothing her breast just starting to come in and she had a funny little patch of hair between her legs. She jumped in as soon as she got her clothes off, and I followed. From them on we always skinny dipped when it was just us. Over the years my sister‘s body developed and I got to watch. I started having erections when we went swimming. My sister was fascinated with that. She was always wanting me to show it to her. One night when I was in about the eighth grade we were playing tag and she pinned me to the pool wall. I could feel her breast pressing against my back and she reached around from behind me and grab my c***. She told me she wanted to see it shoot so I crawled out on the edge of the pool and she floated in the water next to me while I jacked off. When I finally shot, she actually clapped her hands. The next time we were in the pool, she wanted to do it herself, so I sit on the edge again and she was in the pool between my legs. She jerked me until I shot across her chest and shoulders. From then on she jerked me off, probably three times a week. This went on all through junior high and into high school. The first time she came home from college, we finally fucked.