11 years old, I had been horny as hell for about two years, fascinated by women. This was well before cable TV or the internet, so for me it was the JC Penney catalog, the bikini models in my brother's Hot Rod magazines, or even better: "Jiggle" TV like Three's Company and Benny Hill.
It was a weekend afternoon, and I was laying on my bed watching, of all things, Hee Haw on a little B&W TV. Too many busty southern chicks in hot pants, so I rolled over on my stomach and started "pillow humping", like I had done so many times before. This time, though, I immediately felt an intense burn of pleasure that made me hump faster...Boom! BoomBoom!Boom!
Felt so good, I nearly passed out.
Recovered, amazed. Inspected the pillow, found this interesting warm sticky stuff. Knew what it was SUPPOSED to be, but worried that my folks would find it...and threw the pillow away. Heh.