(one's) back is up

One is angry, hostile, defensive, or irritable, often due to a particular cause. John's back is up now. You shouldn't have brought up the subject of college. It's election season, so my dad's back is up all the time.

Common Names:

Name	Pronounced	Usage
Tangaroa	-	Polynesian Mythology
Sima (1)	-	Persian
Blagoje	-	Serbian, Croatian
Marion	['mɛəriən]
Torin	-	Irish
Amela	-	Bosnian