open (one's) mouth

(redirected from open 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 classic literature ?
Insurrection with one accord Banded itself and woke: And Paul was about to open his mouth When Achaia's Deputy spoke
When Dorothy presently asked him a question the Tin Woodman could not open his mouth, for his jaws were tightly rusted together.
One of them grabbed the Marionette by the nose and the other by the chin, and they pulled him unmercifully from side to side in order to make him open his mouth.
At this point, Joe greatly augmented my curiosity by taking the utmost pains to open his mouth very wide, and to put it into the form of a word that looked to me like "sulks.
It is impossible for an Englishman to open his mouth without making some other Englishman hate or despise him.
Our landlord thought he had now an opportunity to open his mouth, and was resolved not to omit it.
It may take five or 10 sessions with the ear pinch, but your dog should start to learn to open his mouth as soon as you put a little pressure on his ear.
a wad of about 10 sheets of paper got wedged fast between Ralph's upper and lower canine teeth preventing him from being able to open his mouth.
I wanted to open his mouth and put my fist all the way down his throat.
The sport needs colourful characters like Ricky, who has never been afraid to open his mouth, or his wallet, in support of our sport.
I asked him to open his mouth, but he refused at the beginning saying that what is in his mouth is a medicine," the corporal said in his statement to the Public Prosecution.
One teenager did have to be taken to the operating room for total anesthesia because he refused to open his mouth, but the tonsil lolly played no role in this incident.
Big Sam, never slow to open his mouth, grabbed the mike for a version of Is This The Way To Amarillo?
So before Scott decides to open his mouth again, try a tour of Iraq or Afganistan, helping those people recover from fates that he couldn't even start to fathom.
ANAHEIM - As Benji Gil roamed the Angels clubhouse pouring liberal amounts of Don Julio tequila down the throat of any teammate foolish enough to open his mouth, he did a double-take when he saw Adam Kennedy.