Literally, it simply refers to any living organism that munches cock in any form. Since introduced by teenagers in the late 2010s, it can have a wide variety of meanings, virtually anything you desire while considering the level of offense you wish it to have. It can also be used as a conversation initiator. asshole dickfuck tittyfuck my ass Good day hello Superb My dick hurts
(Silence) Person 1:Cockmuncher? Person 2:Cockmuncher!!
1: Have you seen my dildos? 2. Shut up you fucking cockmuncher.
1: Have you seen my dildos? 2. Shut up you fucking cockmuncher.
by aidsface45 June 24, 2012
Get the Cockmunchermug. Someone being a very large idiot. An expression of extreme discontent towards another person.
see lloydtron
see lloydtron
Shut up, you cockmaster
by klaw April 8, 2004
Get the cockmunchermug. One who obsesses over things almost anally. Will defend the wrong side in an argument, have confused morals and the logic of a five year old.
by One Two Three January 10, 2008
Get the Cockmunchermug. The Office sycophant. A guy - usually in the depths of Hell we call 'Middle Management' - who is always cosying up to the Director, offering platitudes in the hope of imminent promotion.
by Skirtlifter January 10, 2005
Get the cockmunchermug. 
by TheoThoughts September 11, 2009
Get the cockmunchermug.