Giving Yourself a Concussion at The Playground. That's going to leave a mark!
This is what happens with you screw around with a pissed off bull.
Just another day on the streets of Brazil.
Ok, goodnight. He slightly underestimated his opponent.
Check out this killer UFC knockout. Its a perfect kick to the head.
That's one way to take out the competition.
This nerd wants some guy to punch him. So the guy knocks him out cold.
A couple of kids go at it in the locker room with some boxing gloves and one of them gets knocked out cold.
Someone obviously wasn't happy with his officiating!