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
Bevin	-	Irish
Troels	-	Danish
Kay (2)	-	Welsh Mythology, Arthurian Romance
Tuncay	-	Turkish
Gerlind	-	Ancient Germanic
Patariki	-	Maori