(chiefly, US, informal, idiomatic) To be the perpetual focus of someone's thoughts, with that person having no control over this situation.
Gem of the Day: Hanging onto resentment is letting someone you despise live rent free in your head.
No comments yet — say something.
Add your own interpretation of "live rent-free in someone's head".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.