Someone who often uses language considered profanity. I don't want that garbage mouth watching our kids ever again—she taught them curse words!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. someone who uses obscene language. Who’s the garbage mouth making all the noise?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.