Watching

I developed a great interest in the appearance of my penis and balls during masturbation, so I watched the reaction in a large mirror to see just what happened as I went through the many stages from first stroke to exploding. I learned to edge, and could make a session last as long as an hour if I wanted to and could restrain myself. The most interesting sights were the color of my dick, its bulging head, my balls churning and retracting, and of course the load I shot. I could tell how close I was from how retracted my balls were. As long as they didn't slip into the sockets under my pubic hair, I could stop jacking, rest a while, and begin again. I often wondered if anyone else's balls slipped into the sockets above the shaft. If anyone else experienced this, I'd like to hear about it.