Yeah right, because the first thing I'm gonna do when some girl bites off my dick is to go and kill her...I'm totally not gonna roll around on the ground in unbelievable pain for half an hour, no sir.
Well, with the adrenaline you'd probably go into a berserk rage for 5 minutes, then be in pain for a couple of hours, become weakened with blood loss, pass out, and then die if you didn't get medical help.