I had been looking at my Dad's Playboys. Unlike a lot of guys, I never had a 'dry orgasm.' I had an erection. All the time. When younger I was nowhere NEAR becoming physically mature but, apparently, certain parts of my body were ready.
I swiped about half a dozen of my Dad's Playboys and kept them in my dresser drawer. Each night, I'd take one out, lie on my tummy on my bed, and flip through it while rubbing my pelvis back and forth on the sheets. The fateful evening was like any other until a sensation in my stiff little cock made me realize something was happening.
Back and forth, back and forth, bouncing my pelvis, with a tingling building and building. At that time, big brown nipples and maybe a flash of pubic hair was the most you could see in a magazine but that was all I needed. I stared at that centerfold and kept rubbing, back and forth, on the cool sheets.
Right before the big first 'O' I almost stopped because I was scared that anything that felt that good must be killing me. And it happened. Wave after wave of the best feeling I'd ever experienced. I laid there, my little cock pulsing, wondering what I had discovered. I got up and there was a tiny wet spot where my cock had been. It all came together. That was sperm, what we had learned about in school, and I had just 'came.'
I probably need not add, from that day on, life got a whole lot better.