I started masturbating at a very young age, 6. I didn't know what it was called, I didn't know it was sexual, I just new it felt really good. As I grew up and my penis started developing I noticed a line form on my penis. I have never seen a picture of any guy with this line but my doctor never said anything about it when I would get a physical and he would check my penis briefly. Does anyone have this line on their penis or am I the only one? (I would provide a pic but I am currently w/o a camera. ) The best description I can give is that it's a small flesh line running from the base of my penis to the top the outer skin. It causes me no problems, no pain and is in fact very sensitive, I have made great reactions to women licking it. Maybe it's a road map?