I just wanted to relate some stories about what I've experienced in adult bookstores in the past. For a period back in my twenties (and still occasionally now) I was extremely curious about masturbation and oral bi-sex (the thought of anal doesn't do anything for me).
I used to go to video stores often, and for a while just watched other guys masturbate and get off in the next booth. That always was a big turn-on for me. I could tell these other guys were looking at my cock as well many times. One day I was brave and began to stroke the cock of a man in the next booth when he poked it through the glory hole into my booth. This day changed me forever. It was the first time I got a chance to touch another guy's cock and examine it up close. It was a beautiful circumsized penis and it felt so good to me to touch someone's other than my own.
It was very hard, yet the skin was silky smooth and soft. I gently stroked it until he came, his cum landing on the floor of my booth at my feet. Damn that was exciting! Similar occurances happened many times after that over the course of several years. So many times while jacking another guy's cock I've wanted to take their dick in my mouth but have been too afraid of STD's to do so. I badly want to taste someone else's cum but it would have to be in the right circumstances and with someone I was confident was clean.
I always enjoy reading the M/M masturbation stories. They're a huge turn-on for me. Comments and contact from other guys with similar interests welcomed!