be away with the fairies

To be a bit crazy. I can't follow what your mom is talking about—it's like she's away with the fairies all of a sudden.

(humorous)

to be slightly mad It's no good asking her to look after the children - she's away with the fairies most of the time.

Name	Pronounced	Usage
Benvenuto	-	Italian
Ferran	-	Catalan
Felicie	fe-LEE-tsee-ə	German
Elsie	EL-see	English
Chrysanta	kri-SAN-tə	English (Rare)
Livianus	-	Ancient Roman