I don't really see what the big deal is. Since I play high school football, it has been something I've done since I was a freshman. Since we always came in from practice/games covered in dust, dirt, mud, melted snow, blood, etc., everyone showered in the locker room. It was always funny, because the first few days of practice, the freshman would all be scared and be showering in their gertels or boxers, and all the upper classman would tell them they had "tiny penis syndrome" and make fun of them until they finally got over it.