open (one's) mouth

(redirected from opens his mouth)

open (one's) mouth

To say something, especially that which is indiscreet, boorish, or meant to be a secret. Why did you have to open your mouth about my crush on Tommy? Why couldn't you just keep it between us? You've got to make sure that he never opens his mouth about what went on here today.
See also: mouth, open

open your (big) ˈmouth

(informal) say something when you should not: Why do you always have to open your big mouth? Can’t you just keep quiet sometimes?
See also: mouth, open
References in periodicals archive ?
RYANAIR and boss Michael O'Leary have been treating the flying public with contempt for years but now that the balloon looks ready to burst he is grovelling every time he opens his mouth.
Once you apply pressure and he opens his mouth, insert it.
Indeed, the more the President opens his mouth, the
From head to toe he's faultless, it's just when he opens his mouth that it all goes wrong.
The fans do cringe whenever he opens his mouth, which he only does to the club these days, but their biggest gripe is he was brought in to help strengthen the squad and even the five people who claimed to "very happy" with him cannot say that.
Every time the celebrity chef opens his mouth, he puts his foot in it.
"Every time John Prescott opens his mouth, it's like someone has flipped open his head and stuck in an egg whisk" - Dylan Jones, editor of GQ magazine.
Dowie said the former Birmingham City player "did not know what he was talking about" and Jordan added: "Clinton needs to engage his brain before he opens his mouth, and he will be told that when he returns to the club.
It seems like he might be one of those guys who might just sit there and be really quiet all the time, and then when he finally opens his mouth he says some profound wisdom.
Kerstetter, whose gawky frame, unkempt hair, and wide, pale eyes lend him an unhinged air even before he opens his mouth, gives a genuinely unsettling performance.
You create New Orleans improvisation and big record companies call it "Dixieland," a profitable "cover." Joe Turner opens his mouth, and it comes out in Elvis Presley's bank account.
FATHER HESBURGH, the Spirit of Notre Dame: "Ten years after the average athlete graduates, everyone will have forgotten when and where he played, but every time he opens his mouth, everyone will know whether he was educated."
Next, he opens his mouth and squeezes out droplets from what is called a gular gland, rubbing these into the wing sac.
There is something saintly about his persona--that is, until he opens his mouth. No saint was ever so tactless.
And until Steinbrenner opens his mouth, it looks like the city's Mayor will keep opening both his mouth and city coffers.