Jumping off roofs is generally not a good idea.
The bigger they are, the harder they fall!
Surprisingly somebody came to her rescue just in time.
Dubstep fits in perfect for this video.
I would be angry if I was the guinea pig for that demonstration.
Tough guy gets knocked da F*** out by a smaller kid. Now that's what I call using your head!
Don't try to tackle this guy 1 on 1 unless you want to get knocked out.
The effects of getting hit in the head one too many times...
Here's a compilation of some powerful slow motion knockouts during MMA bouts.