open (one's) big mouth

(redirected from opens her 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 ?
Before I can share this thrilling angle, Patty opens her big mouth.
Watching Jade tip-toeing over eggshells as she attempts to harness her vulgar mother's excesses is painful - and a pointless exercise since every time Jackiey opens her big mouth she emits meaningless words delivered with the rasping noise of a man who's just gargled with razor blades.