What's biting?

What's biting somebody?

(informal)

something that you say in order to ask why someone is in a bad mood What's biting her? She hasn't said a word all morning.

Name	Pronounced	Usage
Bas	BAHS	Dutch
Zawisza	-	Polish (Archaic)
Whaley	['hweili]
Therasia	-	Late Roman
Justus	YUWS-tuws (German), JUS-təs (English)	German, Dutch, Late Roman
Marquis	mahr-KEE	African American