even a fish wouldn't get caught if he kept his mouth shut

even a fish wouldn't get caught if he kept his mouth shut

A warning that one can usually avoid trouble by not opening one's mouth. I can't believe you told them about our plan! Geez, even a fish wouldn't get caught if he kept his mouth shut—come on, man!
See also: caught, even, fish, get, he, if, kept, mouth, shut
Farlex Dictionary of Idioms.
See also:
  • anyone would think (something)
  • anyone would think...
  • (Do) you kiss your mother with that mouth?
  • guzzery
  • Do you eat with that mouth?
  • (Do) you eat with that mouth?
  • CR
  • CRS