Thanks to his hard head, a Massachusetts man set a new world record by HAMMERING 38 NAILS INTO A BOARD USING HIS SKULL in under two minutes.

John "Hammer Head" Ferraro attributes his unique ability to having a thicker-than-average skull. He says he first realized he was thickheaded when he went head first through a wooden door as a child. Ferraro also hold the world record for "Most concrete blocks broken on the head with a bowling ball in three minutes". He broke 45 concrete blocks on his head, to be exact.