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

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.
See also:
  • wash your mouth out
  • rinse (one's) mouth out (with soap)
  • rinse mouth out
  • (Do) you eat with that mouth?
  • (Do) you kiss your grandmother with that mouth?
  • (Do) you kiss your granny with that mouth?
  • (Do) you kiss your mama with that mouth?
  • (Do) you kiss your momma with that mouth?
  • cuss like a sailor
  • be off-color