Been through alot, manage to get a spike through the foot, alot of broken bones, and stuff like that.
Close second would probably be when i injured my hand and manage to brake 3 fingers, get a crack in the forth one, and then got cracks in 2 of the knuckles and almost completely crush third knuckle.
But winner i would say is one time when i got kicked in the nuts.
Broken stuff hurt alot longer, but kick in the nuts was way more intense pain.