The nickname of NBA player Dejounte Murray. After Dejounte Murray broke the record for most social media post about one player, his nickname became The Cock Muncher.
A "Cock Muncher" or "Cock Eater" Is a description of a man who generally eats other men's genitals, or at least seems like he eats other men's genitals. You can call some one a "Cock Muncher" when they are being an absolute cunt to you or refusing simple requests.
Luke: "Hey Adam, Can you pass me that water bottle?"
Adam: "no i can't be arsed"
Luke: " You absolute dick-sucking, no bitches looking ass, fat, meady, short, blonde, shit haired, lonely cock muncher!"
Plain and Simple, A Cock munchingDonkey Fucker.
It's an Insult to yell, or scream, at someone when you want to make ends meet. this will shut the other person up and you will have piece and quiet.