Eh, had that happen when I was 12. Tripped while running around in board shorts with one of those random boners you get while thinking about hot chicks at that age.
Small crack no blood no hospital. But it hurt like a motherfucker and afterwards I curve up a bit. I literally cant be deepthroated unless 69'ed and can't do any position that requires my dick to curve down.
On the positive side, I grew about an extra inch after all the swelling went down.