Emma Stone graced the stage of "The Tonight Show with Jimmy Fallon" on Monday night, where she battled Fallon in a game called "Box of Lies."
The game is pretty much what you'd expect, players open a box, see the contents and then lie to their opponent about what is inside.
And well, Stone may be a wonderful actress -- who admittedly loves to lip sync -- she is a terrible liar. Fallon immediately picks up on her fibs. But is Fallon any better of a liar? Watch below to find out: