Jimmy Fallon just proved once again why he's the best.
Fallon is known for his musical moxie, performing everything from barbershop remixes of hip hop classics to hilarious originals like "Balls In Your Mouth," a song obviously about raising awareness for the dangers of oil spills. But this magical behind-the-scenes moment reminds us why America fell in love with the "Tonight Show" host in the first place: He's just a regular guy who loves to perform.
"The Tonight Show" airs weeknights at 11:35 p.m. ET on NBC.
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