Today marks the 25th anniversary of the Bite Fight - when Mike Tyson bit off a bit of Evander Holyfield's ear in the third round.
It was shocking - they changed the referee, the boxing commissioner entered the ring, and they continued the fight.
But Mike wasn't done! He did it again. Putz.
Tyson was disqualified from the bout and lost his boxing license. He was later reinstated.
Evander Holyfield went on to greatness.
If you want feel sick, too, watch this... First bite at 11:15.