What happens when Tina Fey and Jimmy Fallon switch mouths? Well, things get weird but also hilarious. Tina and Jimmy played around with trading mouths on Monday for "Lip Flip," the latest sure-to-go-viral skit from Jimmy's Tonight Show. Watch Jimmy and Tina get adorably silly above, and be sure to check out Jimmy's other big hit from Monday night, performing "Let It Go" with Idina Menzel and musical instruments.
Jimmy Fallon and Pitbull Play Are You Smarter Than a 5th Grader?, and You'll Never Guess Who Came Out on Top