I used to with my friend in grade school. He was black and had a gigantic cock, i was jealous of it. He always told me I was big though. He ended up being gay which unfortunately drove us apart.

Couple years after that in high school my younger cuz wanted me to show him how to do it. Definitely an exhilarating feeling when I whipped out my junk and he was like "holy fuck, I'd hate to see you hard!" Didn't take long after that. Now we jack off together all of the time and he has caught up with me in size. We always argue about whose bigger. I think he has got me on length but he doesn't even compete in girth.