Bump on penis? No itching, none anywhere else!

image My friend had this come up. He did not notice it i did. He said he does not have any itching, irritation and there are no other bumps around. He thinks it may be from zipper? I got STD tested two weeks ago and everything came back normal on my part. I am making him go to the doctor today! The bump also appears in the picture to be a white bump but its almost flesh colored!

anything yet?