Leprechaun Will Ferrell Sings “Danny Boy” And Calls Out Sourpuss Bill O’Reilly

Does everyone here remember when Will Ferrell was an elf in the movie Elf? When he visited The Late Show this week for St. Patrick ‘s Day, he was dressed like a different familiar tiny being, a leprechaun. Although at first glance, you might think Ferrell just loves playing mythical creatures who he ‘s far too big to convincingly play, in this case, he dressed up as a way to teach David Letterman ‘s television audience about the true origin of St. Patrick ‘s Day. Here he is singing about it:

Ferrell also stayed dressed up as a leprechaun to talk about SNL40 and one of the biggest sourpusses in the audience.