Living rent free

Meaning. Something you can't stop thinking about

See it in a sentence

That song is living rent free in my head.

How each generation says it

The closest equivalent for this idea in every generation.

A very fun or enjoyable time.

Excited, energized, or pumped up about something coming.

An intensified, playful way of saying you feel very sad or down.

Overreacting, freaking out, or acting irrational.