I slammed by penis against a hard corner of a piece of furniture many times as a way to masturb*te until something busted and blood came out of my urethra. Haven't been able to keep an erection very successfully since, and because it doesn't fill up fully either, it's a lot smaller. I'm only in my early 20s but now I have ED. Since this time I met a girl and she already ended things and I think it's because I couldn't 'perform'. Fun life ahead.