open (one's) big mouth

(redirected from opened my big mouth)
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open (one's) big mouth

To say something that is meant to be a secret; to say something in an indiscreet, noisy, or boorish manner. Why did you have to open your big mouth about my crush on Tommy? Why couldn't you just keep it between us? We would have gotten away with the plan if she hadn't opened her big mouth!
See also: big, mouth, open
References in periodicals archive ?
I shouldn't have opened my big mouth about a settled back four helping with clean sheets away from home.
But all of a sudden after I opened my big mouth I started playing a lot better, started believing for the first time in a couple of years exactly what I was capable of doing.
I opened my big mouth and said Livingston would be in the top flight within five or seven years of its inception.