A few years ago when I was thirteen, I was looking at erotic pictures on the internet and such, but hadn't ever heard of masturbation or orgasm or any of those terms.
Lately, I had come across penis enlargement sites, and for some reason I wanted to make my dick get bigger. But of course, the sites wouldn't let me in because they were all pay sites and adult memberships, so I somehow deduced that using my dad's foot vibrators would do the trick.
One night I put each one on either side of my dick and left them vibrating there, until after about an hour I got this really weird feeling and the next thing I knew, the sheets were wet. At the time I didn't know what this was, and I didn't consider it necessarily pleasurable. But after that, I went on to research sexual terms and masturbation, etc. Ever since then, I've masturbated at least twice a day.