I don't have any idea of how many guys stimulate their pee hole. My ex wife liked to spread the slit for my pee hole and stick her tongue in the slit and lick. It was wild. Of course I tried to do the same with her pee hole. I have read about inserting object up my pee hole and I know that can be a real touchy thing to do. I have had a catheter inserted and it hurt like hell going in, but once it was in it felt good and really did coming out. A few years back, after I would cum (especially when jacking off) there would be some cum left in my dick. After a while it would firm up and some would ooze out of my pee hole. I found that when I did it at the right time, I could actually pull some of the firm cum out of my dick (kind of like pulling a string out of it). The sensation was wild. Similar to having anal beads pulled out of your ass, but without the bumps. Don't know if this explains what I was doing.