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
Vavrinec	-	Slovak
Gordon	['gɔ:dn]
Louisa	loo-EEZ-ə (English), loo-EES-ə (English)	English, German, Dutch
Bate	-	Medieval English
Buster	BUS-tər	English
BolÍVar	-	Spanish (Latin American)