From the time I was about five until fifteen, my best friend was named Kevin.
When I was ten, I stayed over at Kevin's house for the entire weekend. We got to talking and he said that his entire family was very open about nudity. They did not cover up much around their house. Apparently this also included his sister (thirteen at the time). I asked him if he had seen her naked (like totally) and he said yes (I thought, sure!!).
Anyway, the next night I waited until I thought she was having a bath or a shower and then excused myself to go to the bathroom. I went upstairs and knocked on the bathroom door. Karen answered and she said I could come in so long as I 'didn't smell up the place.' So I did.
Well, she was in the tub and was shaving her legs. I stuttered a bit and she said to close the door to keep in the steam. I did and stared. She reminded me I had to pee. Which I tried to do but could not. She asked me to come closer to the tub and asked to see my little guy. She said she saw her brothers all the time and it was 'no big deal'. So I wobbled over to the tub with little peter hanging (or pointing) out. She said it looked Ok for a 'little boy's penis'. I wasn't sure if I was happy or I had just been put down. She asked if I wanted to see her 'fuffer' close up. I wasn't sure what 'fuffer' was but I knew I wanted to see it. So, she laid back in the tub, and pushed her crotch up in the air. There it was! The thing I always dreamed about. She spread her lips a bit and said to take a good look (I did). She had some hair and she was already evidently shaving it.
She then said it was time for me to leave so she could finish her bath. Before I left, she asked how often I played with myself. She said she sometimes puts on a show for her brother while he did himself. He never mentioned that to me before!