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. © 2015 Farlex, Inc, all rights reserved.
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