rude slang One who is stupid or irritating. Ugh, don't even listen to that guy, he's such a buttmunch.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a despised male. (Usually objectionable.) You dumb butt-munch! Why did you do that?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.