Rent Free

Rent Free is when you cant stop thinking about someethig.

People use the phrase "rent free" to refer ro wwhen they cant stop thinking about something or someone, it means they are living insisde someones head. 

This arae some examples of how people use the phrase.

• My crush lives in my head rent free.

• This song i love lives in my head rent free.

• That funny video lives in my head rent free.