I am the older sister to my brother. When I was about twelve or so I found my fathers 'stash' of skin mags. I now presume he used them to masturbate to, but I was fascinated by the penis's in them. I WANTED to see one. So I thought of my younger brother Tim.
Now Tim would have been ten, and he was eager to see what I had found. We went and looked them over a couple of times together. Finally I asked him if he wanted to see a 'real woman'. He of course said yes so I stripped off for him and tried to copy some of the poses in the magazines (I even spread my lips apart for him to get a real good look. I actually loved doing it for him).
I finally told him fair was fair and he had to do the same thing for me. He had to be encouraged a bit, but finally did do it. Down went his pants and up sprang his little penis (I almost laughed). His little erection was probably about two and a half inches long and he had no hair. I had hair on my lips and VERY small breasts (heck, they're still only A cups). I grabbed his penis and kinda rubbed at it a bit (I didn't really get the idea of how to masturbate him until later).
I hope this quick note got everyone as hot as it did me writing it. If you want to know more, please tell me.
I have to go and rub.