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
Jeremy	['dʒerimi]
Sophia	so-FEE-ə (English), so-FIE-ə (British English), zo-FEE-ah (German)	English, Greek, German, Ancient Greek
Siward	-	Ancient Germanic
Ljerka	-	Croatian, Serbian, Slovene
Vikentiy	-	Russian
Kveta	-	Czech