When I was growing up my parents were very open about nudity around our house. I frequently saw my father (and mom) naked. Obviously, my brother (one year younger than me) and I also ended up that way around home and over at sleep-overs.
When I was about ten and starting to develop I would often show off the new bits to Tim. I had breasts and pubic hair and he did not. I liked to flaunt it! We would sometimes have 'play nights' where we could each invite a friend over and watch movies, eat etc. Invariably he would invite Scott and I would invite Karen.
One night, Tim and Scott asked to see how we had developed. It was a bit of a stretch for Karen to do, but I had no problem with it. In fact, I kinda enjoyed it. Well, once I was naked, Karen went along with it. She had just the smallest amount of hair in her pubic area.
We told the guys that if they wanted to look any closer they would have to strip off. Well, their clothes were off in a flash! They were both sporting tiny erections and they looked so cute. I finally asked to see them masturbate (earlier explanation by my mom). They agreed but only if we would hold our lips apart. Agreed! They did masturbate for us.
Thats's it and all about me growing up.