About five years ago I would sometimes drive up to a nudist club about an hours drive from San Diego. It was a small club with a multiroomed clubhouse, pool, and jacuzzi and a lot of property to roam on. The club was not very well maintained and needed a lot of work, but it did offer a place to hang out nude everywhere.
Mostly men were there but there were some attractive couples and single women there for the club's contests. Another good thing about it was you could walk around with an erection and nobody cared, some admired. Sometimes when I was there there were no couples or attractive women so I would go off by myself and find a private place to masturbate in the sun somewhere on the property.
I was out there one time during the a contest when I caught the eye of one of the contestants. She was in the parking lot with another woman I saw a previous contests. I said 'hi' to them and they both checked me out especially my erection that the gave me. Well I got to know the new girl that day and other times. She always was checking out my penis which was always hard when I was around her. After one of the contests I was posing with her on a large boulder. We were both nude and she kept commenting about my large erection. Someone suggested that she play with my cock, after a brief hesitation she grabbed my penis. I have never had an audience like that taking our photos so in a short while I was coming on the boulder. I saw her several more times at the club but we didn't do much as the time we posed she got in trouble with the owner of the club. I still don't know why.
Well about six months later after another contest I was standing by her car as she was sitting in it. My erection was at her eye level so it was hard to ignore (no pun intended). She always was telling me what a big cock I had (I'm 7.5' and very thick and wide. Well next thing I know she has my penis in her hand and she is totally enjoying playing with it. She was really into my penis and I could tell by the way she was masturbating me. She was playing with her pussy as she was stroking me. She was very discreet and I don't think anyone saw us. Somehow I was able to hold off from coming. But when I finally came she was impressed by the volume of my load. She made several comments both about my penis and cumload. I thanked her and she drove off in the sunset.