Jimmy asks guests Will Ferrell and Kevin Hart to battle in an intense lip sync-off to songs like Beyoncé's "Drunk in Love" and John Legend's "All of Me." (Original Air Date: February 1, 2015) The Tonight Show Starring Jimmy Fallon. Stream now on Peacock: https://bit.ly/3gZJaNy Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35ET/10:35c Get more The Tonight Show Starring Jimmy Fallon: https://www.nbc.com/