When I was growing up, we used to spend a lot of the summer at a 'nudist camp'. It was cool since there were always lot's of kids to play with. What I didn't know then was why men were quite often taking our photo's then. I don't think they would allow it now, but then, when I was developing breasts and pubic hair (and my friends) I always seemed to be in one photo or another.
Now I know the men were probably masturbating to them later. I now masturbate to the thought of them masturbating to me... cool huh!