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
Stepane	-	Georgian
Felipe	fe-LEE-pe (Spanish)	Spanish, Portuguese (Brazilian)
Maike	MIE-kə (German)	Frisian, German
Kahina	-	Northern African, Berber
Jerk	-	Swedish
Ezra	EZ-rə (English)	Biblical, English, Hebrew