Melissa McCarthy is returning once more to host SNL this weekend, and in advance she stopped by Late Night with Jimmy Fallon. Like a couple of old pals, the pair sat down for a brisk round of a game called "Box of Lies."

Watch as she attempts to convince Fallon that a bag of joints is actually a "dispenser for Dixie Cups." Let's just say that Ms. McCarthy, hilarious and delightful as she is, should probably steer clear of poker.

(h/t Splitsider)