Stephen Merchant joins Joseph Gordon Levitt & Jimmy Fallon in an epic lip syncing sing off. Check out this funny video from the Jimmy Fallon show. Also in this video, note that Joseph Gordon Levitt is cuter than a button, I don't care who you think you are. Adorable.
WATCH: Hilarious Lip Sync-Off with Joseph Gordon Levitt, Stephen Merchant and Jimmy Fallon
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