American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Flap your gums


Gab. Mindless talking. Overly talkative, especially about secrets. ‘Gums’ in the sense of one’s mouth (teeth + gums) are moving. (Compare to Small talk or Yakking.).

“We were shopping forĀ  car and wasted two hours with a salesman who just was flapping his gums but no real help in our search.”

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