hi so it fell off so now its a none bump it no longer exists so why worry now its gone? i don't know of anything from masturbating that would cause a bump unless your masturbating with a tight grip if so please change it to a feather light grip by doing this is resembles the way a vagina would fill like and please use some kind of oil. baby oil will do. hope this helps. good luck
found a small bump on the shaft of penis near glans. after touching a wet tissue to it it fell off. what could it be? . i had a wart on the top part of the foreskin (before it was removed) but that was two years ago. i'm concerned that it may have been another wart. the last one took freezing to come off so i am doubtful it was one but had to ask. i read that it may be because of masturbation.