"It has been acknowledged many times that myself and Chad Smith, drummer for the Red Hot Chili Peppers, share a resemblance to each other. A lot of people think that it’s me playing for the Red Hot Chili Peppers. But that would be an insult to Chad Smith. The truth of the matter is there is no Will Ferrell. Only Chad Smith."

After playing the Super Bowl Chad Smith publicly asked Will Ferrell to stop impersonating him, and challenged Will to a drum vs. cowbell battle:

"I need you… drum battle, me and you. I've seen your skills. You don’t got 'em. Let's go. Golden cowbell, winner – boom! You know, his cowbell work is well-documented, but his drumset skills are nominal based on Step Brothers the film. Other than wiping his testicles on the drums, which of course I give high marks to."

Chad refers to this scene with John C.Reilly and Will Ferrell in the 2008 film Step Brothers:

Will has now accepted Chad's offer, on the provision that they raise money for a cancer charity:

"Hi, Chad (...) 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."

No date or location has been confirmed for their epic showdown.

In the classic Saturday Night Live skit Will Ferrell, along with the help of actor Christoper Walken, revived the love for the cowbell and made the catch phrase More Cowbell! an instant hit: