flap one's gums

Verb

US colloquial idiomatic

(idiomatic, colloquial, US) To speak idly; to talk without effect.

Japanese Meaning

無駄口をたたく / 意味のないおしゃべりをする

To flap one's gums about trivial matters wastes everyone's time.

些細なことについて無駄口を叩くのは、みんなの時間の無駄だ。

Sense（1）

(idiomatic, colloquial, US) To speak idly; to talk without effect.

What's that old coot flapping his gums about this time?

flaps one's gums

（ present singular third-person ）

flapping one's gums

（ participle present ）

flapped one's gums

（ participle past ）

flapped one's gums

（ past ）