My best bud and me both have thirteen year old boys. Since they were entering puberty they wanted to know about jacking off and we told our son's about it in our own way privately.
Jake and I talked a long time about masturbation and how we did it and with whom and all, since we were ex Marines. Talking about jacking off sexed us both up and we jacked off each other. We are now regular jack off buddies even though we are married. It sure feels great feeling another guy's cock and balls and jacking him off like old times.