open (one's) big mouth

(redirected from open your 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
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
But no, you had to go and open your big mouth didn't you?
Talk has never been cheaper in rugby union - if you open your big mouth there are too many people waiting to stick your foot right back down it.
Pierre Bourdieu: You have spoken somewhere of "the European or German tradition"--which is also, by the way, a French tradition--of "opening your big mouth." I am delighted that you received the Nobel Prize, and I am also delighted that you haven't been transformed by receiving the Nobel, that you are as inclined as you ever were to "open your big mouth." I am hoping that we can open our big mouths together.
Get your act together Waterman.You may be a music millionaire but you should think before you open your big mouth
There wasn't much point in them going through all that suffering only for you to then open your big mouth and preach about the so-called joy of taking drugs, was there?
I would also like to add to the idiots that want this bill, you should order it and read what is in it before you open your big mouths. I have been in health care for years and you need to educate yourself before knocking the Republican party.