In some sports, fighting is forbidden. In others, it's the whole point--but they too can quickly spiral out of control. Counting down on the dumbest fights of all time. No biting!

Some athletes are synonymous with greatness. But slapping their name on something doesn't make it a slam dunk. From cologne to video games to heavy carbs--don't buy this at home!

A pumped-up crowd can act like an extra player on the field. But there's a line they're not supposed to cross--literally--and these fans just couldn't help themselves.