Doppelgängers Will Ferrell and Red Hot Chili Peppers drummer Chad Smith faced each other during a "traditional" drum-off Thursday night on The Tonight Show.
Soon, the rest of the Red Hot Chili Peppers joined the dueling drummers on stage to play Blue Oyster Cult's "Don't Fear the Reaper."
Jim Dalrymple is a reporter for BuzzFeed News and is based in Los Angeles.
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