Steve Carell And Jimmy Fallon Lose It Playing 'Word Sneak' The Wrong Way

Get ready for a totally awesome, stupendous, very good day.

Traditionally, you play "The Tonight Show's" game "Word Sneak" by trying to sneak random words into everyday conversation, but Steve Carell doesn't care.

Partway through the game, the star of "Alexander and the Terrible, Horrible, No Good, Very Bad Day," decided to change the rules by trying to make Jimmy Fallon guess the words he was about to say.

It's not how you play "Word Sneak," but it's definitely awesome.

"The Tonight Show Starring Jimmy Fallon" airs weeknights at 11:35 p.m. ET on NBC.