take it into head to

take it into your head to do something

to decide to do something Uncle Julian might take it into his head to say almost anything.

Usage notes: usually said about doing something silly or surprising

Name	Pronounced	Usage
Shukri	-	Arabic
Cirillo	chee-REEL-lo	Italian
Aranrhod	-	Welsh, Welsh Mythology
Darian	DER-ee-ən, DAR-ee-ən	English
Rylan	RIE-lən	English (Modern)
Adonai	-	Theology