Gossip Girl star Leighton Meester stars with Minka Kelly in The Roommate, in theaters Friday. If you ever need a roommate in real life, she's totally down!
As long as you abide by certain ground rules, of course. One in particular.
She's a great girl, but as Leighton explains in this College Humor video, there's one non-negotiable. Do as she says and this arrangement will work out great.
WARNING: The video contains excessive, hilarious, repetitive profanity.