Pedro "The Pedro" Otavio

Hmm....this must be the laziest nickname in all of MMA.

Amir "Amir" Rahnavardi

Thank Amir, Pedro...he just saved your ass.

Ricco "Suave" Rodriguez

Here's a great idea! Give yourself a nickname that's a play off one of the worst songs of the '90s that was written by a creepy Latino guy with a mullet! Hey, Ricco, if getting in a terrible car accident and moving your injured, unconscious girlfriend to the drivers seat so you wouldn't get in trouble for driving on a suspended license (you know, cause of all your prior DUI's) makes you suave, well then you have it in spades.

Sean "The Muscle Shark" Sherk

The "Muscle Shark"? It sounds like a vibrator.

Ron "H2O" Waterman

"You see, cause I have the word water in my last name, and H2O is the chemical symbol for water!" (By the way, that thing in his hands is a Muscle Shark.)