flap (one's) jaws

(redirected from flapping their jaws)

flap (one's) jaws

To talk in a meaningless, aimless, or idle manner; to chatter or blather. Jim always starts flapping his jaws after he's had a couple of drinks. Quit flapping your jaws—I need some quiet so I can think!
See also: flap, jaw
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
Pfaffe and Dell were imminently touching and human, often constrained as they were by their characters' self-imposed reticence (Frankie complains of the two Sheilas "flapping their jaws over nothing") to expressing their pain between rather than within their lines.