The coffee or low-priced item you buy at a cafe in order to validate spending a long time in the cafe.

Commonly applied in situations where the cafe has a comfortable spot to read or do homework, or offers free wifi.

Considered an excellent means of preventing dirty looks from baristas and managers.
"Let's go study at the cafe down the street."
"No thanks, I can't afford the coffee rent"
by Wooden Leg Named Smyth August 30, 2011
Get the Coffee Rent mug.