Definitions by Megamotherfucker(the good one)

Mega Motherfucker 

A person with a massive 12" cock who fucks mothers.

Also an asshole of epic proportions

"Wow Sam is really a Mega motherfucker"
Also
"Oh My God Sam is a mega motherfucker, i hate him so much

Mega Motherfucker by Megamotherfucker(the good one) October 16, 2008