"More cowbell" is an American pop culture catchphrase that started from an April 8, 2000 Saturday Night Live comedy sketch about the recording of the song "(Don’t Fear) The Reaper" by Blue Oyster Cult. The sketch featured guest host Christopher Walken as music producer Bruce Dickinson and Will Ferrell as fictional cowbell player Gene Frenkle. In the television special Saturday Night Live: 101 Most Unforgettable Moments, this sketch is moment number five.

Watch the full sketch here.