So how do I know if I broke my penis? I was having pretty rough dry humping sex Thursday night. When I woke up friday I almost always have morning wood. Then when I went to go take a shower, I went to go rub one out and I couldn't get it all the way up. So I figure I would give it a day, now this morning I can't get it up at all. The thing is it doesn't hurt, it just won't go to full mast and I've never had a problem like this before.