open (one's) mouth

(redirected from open my 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 ?
He always began by shoving me into a chair before I had time to open my mouth, gave me cordially a large cigar, and in excellent English would start to talk everlastingly about the phenomenal severity of the weather.
If your lordship will graciously permit me to open my mouth, I shall be happy to express my sentiments," said he, with elaborate sarcasm.
She told the Otago Daily Times: "I woke up, I think minutes later, to have a drink and I couldn't open my mouth .
If I open my mouth a lot of people will be in trouble," Nitish Kumar told reporters on the sidelines of a programme here.
Although once I open my mouth I rather let things out of the bag" - - Actress Celia Imrie.
I've not been able to open my mouth or speak very well.
I'm now unable to open my mouth more than half an inch.
There are times when I am hesitant to open my mouth for fear of being betrayed by my Welsh accent.
When I accidentally open my mouth while I chew, my sister says, "You're opening your mouth
Once I open my mouth, my credibility speaks for itself because they know where I came from,'' Hopkins said.
Q SOMETIMES when I'm eating, especially if I bite into an apple, I feel as if my jaw is going to get stuck open and for a while after it clicks when I open my mouth.
All I had to do was open my mouth, and everyone around me would be gone.
He was acting sanctimonious, and I could have kicked him as soon as open my mouth to him.
She takes me over and introduces me to Anouk, and without knowing why or how, I open my mouth and this is what I hear coming out of my mouth: 'I'm so excited to meet you; I've been looking all over for you.
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