Dancer JoJo Siwa and Jimmy take turns aggressively attempting random dance moves, like "The Carlton" and the "Floss," to see who can dance the hardest.
The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.