flap (one's) jaws

To talk in a meaningless, aimless, or idle manner. Jim always starts flapping his jaws after he's had a couple of drinks.

Name	Pronounced	Usage
Valens	-	Ancient Roman
Hafza	-	Arabic
Marquise	mahr-KEE	African American (Modern)
Agnar	-	Norwegian, Icelandic
Beauregard	BO-rə-gahrd	English (Rare)
Aenor	-	Ancient Germanic (Latinized)