A bad landing knocks this guy out cold. He's going to wake up with a headache!
That's going to leave a mark!
This dude is either going to have a really bad headache or be brain dead after this.
After winning the fight he almost knocks himself out.
A bull knocks himself out. Thanks to the person who uploaded this one, I got a kick out of it.
He lacks the necessary ninja skills to pull this off.
This guy has his ATV land on him after a bad jump.
Looks like he got too excited.
Here's a compilation of some idiots trying to jump moving cars.
His neck was sore for the rest of the day.