You make it happen.
I found out about masturbation by watching my dad and his bud jack off each other in his work room.
I was 14 and horny as all get out. I shot my wad when they did. I watched them for years when Don, my dad's bud, would come over for their regular jack off session.
When I got older at 18, I jacked off with Don, but never said anything about what I was watching earlier. When I would see their cum come out of the head of their cocks, I'd get spasms of killer orgasms. No guy could ever forget seeing anything like that or having the sexual feelings of those jack offs.