cut one's own throat

cut (one's) own throat

To cause problems for oneself with one's own actions (which are often motivated by anger). I know you're mad at your dad, but don't cut your own throat here—running away is only going to make your life harder.
See also: cut, own, throat
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

cut one’s own throat

tv. to do something that harms oneself. He’s just cutting his own throat, and he knows it.
See also: cut, own, throat
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Even a razor - presumably to cut one's own throat or slash out at the next flight attendant who says "have a nice day".