(something) comes into (your) head

you think or remember something.

It just came into my head that I should give my money away and throw myself on God's mercy.

Usage notes: sometimes used in the form the first thing that comes into your head - the first thing you think of:

Mrs. Winn said the first thing that came into her head.

• It's easy to be wise after the event.
• It's every man for himself.
• It's feeding time at the zoo!
• it's funeral
• it's high time
• It's just not cricket!
• It's just one of those things.
• It's just one thing after another!
• It's more than my job's worth.
• It's no good crying over spilt milk.
• It's no skin off my nose.
• it's no skin off nose
• it's no skin off your nose
• It's not cricket!
• It's not over until the fat lady sings.
• it's not rocket science
• it's no use
• It's no use crying over spilt milk.
• it's no wonder
• it's now or never
• It's now or never.
• it's one thing after another
• It's one thing after another!
• It's raining cats and dogs!
• it's swings and roundabouts