im 24 and i dont have problems with penis erection, however when my penis is erect the foreskin still cover half of the head and I can pull the foreskin back; to show the whole head but my penis needs to be lubricated because if not it causes me pain while trying to pull the foreskin back. About one month ago it happened something that I have never experimented. I was goint to have sex and my penis was already erect but not lubricated and the girl I was with, pulled back the foreskin about two times causing me pain because she was forcing it and I felt sometning streched and tore; I noticed inmediately that I was bleeding it seemed that one nerve connected to the foreskin stretched too much. My question is that is this because while erect my foreskin is to tight to my penis or what do you think? I have had sex too many times and this never happened to me before.