flap (one's) gums

(redirected from flap their gums)
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flap (one's) gums

To chatter or blather. Quit flapping your gums—I need some quiet so I can think! Whenever Charlie starts to flap his gums, I can't get in a word!
See also: flap, gum

flap one's gums

 and flap one's jaws
Rur. to talk aimlessly. They're still out on the porch, flapping their gums. Well, I can't sit here flapping my jaws all day. Gotta get back to work.
See also: flap, gum

flap your gums

AMERICAN, INFORMAL
If someone flaps their gums, they talk a lot without saying anything important. Who wants to hear you flapping your gums first thing in the morning?
See also: flap, gum
References in periodicals archive ?
There always seems to be two choices of response when politicians flap their gums and get themselves in trouble.
He's like people who like to flap their gums when they don't know what they're talking about.