Ah, to be 18 and stupid(er) again

Last night, a young man I go to church with was describing the rules of adolescent boys playing ping-pong. There are four or so boys that play. When a boy loses a match, he stands with his back to the group and every other boy throws a ping-pong ball, as hard as possible, against the loser's back. This boy even had a picture on his cell phone of the welts on his back after one loss. Everyone else in the room considered this hazing, but the boy insisted it was alright because he is "18 and knows what he is doing."