Top definition
When someone fixates on a person, so that said person or their actions occupies one's mind, they are said to be giving that person free rent.
Dude, you think about that guy so much, you are giving him free rent.

Don't let him occupy your head space like that, you are giving him free rent.

I'm in your head without paying, thanks for the free rent.
via giphy
by walter_kurtz June 03, 2018
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