Red Hot Chili Peppers drummer Chad Smith issued a challenge to doppelganger Will Ferrell during his Reddit AMA a few months ago, and Ferrell accepted:

Hi, Chad. Will Ferrell here. I saw your video and I graciously accept your invitation to a drum battle. If we can raise $300,000 for Cancer for College I will face off with you in the greatest drum vs. cowbell showdown the world has ever seen. We can do it on stage at a Red Hot Chili Peppers concert or in front of a mutually convenient public library. Your call. Also, would you rather fight a hundred duck sized ducks or one horse sized horse?

Last night, that challenge came to a head as the two joined Jimmy Fallon on the Tonight Show for, “A traditional drum off. We’ll be using traditional drum off rules,” as Fallon told the crowd.

Smtih, with over thirty years of drumming experience behind him, put up a substantial effort. But Ferrell — who surprised everyone with a better than average performance — won the day when the cowbell came out and he was joined on stage by the rest of the Red Hot Chili Peppers performing the Blue Oyster Cult classic, “Don’t Fear the Reaper.”

Neither of them fought any ducks or horses of any size, to the disappointment of many.