Surprise! Bill Murray crawls out of a cake on Letterman

Things were bound to get weird on last night's David Letterman, where Bill Murray stopped by for the Late Show's second-to-last episode.

Murray and Letterman go way back — he was the first guest on two of Letterman's Late Show incarnations — so what better way to say goodbye than covering everyone in icing?

After clawing his way out of a fake "Goodbye Dave" cake, he gives Dave a bear hug and proceeds to roam around the set, smearing cake on the band and a few lucky audience members. Never change, Bill!