Comedian Will Ferrel and Red Hot Chili Peppers drummer Chad Smith look alike! Like, they REALLY look alike!  So much so, that Ferrell even tried to convince people that Smith was just a character the comedian had created.  That's when Jimmy Fallon decided to get the two together for a DRUM-OFF!

The drum-off is pretty funny.  It went viral last week and has over 18 million views on YouTube.  But the pre drum-off interview was just as funny.  Check it out below.

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