wash your mouth out

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wash (one's) mouth out (with soap)

To punish one for using rude, vulgar, or obscene language by cleaning their mouth with soap (usually used merely as a threat). If you kids don't stop cussing in this house, I'm going to wash your mouths out with soap!
See also: mouth, out, wash

wash your mouth out

An admonishment for using profanity. Used especially by parents (or other adults) as a figurative imperative to children. Wash your mouth out! What would your mother think if she heard you using that language!
See also: mouth, out, wash
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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