The comic chemistry shared between Will Ferrell and John C. Reilly was apparent ever since they shared screen time in the hilarious Stepbrothers, but luckily the guys love to have a laugh every now and again- even at the expense of a beloved Christmas classic.

Even if you've never seen the original Bing/Bowie duet "Peace On Earth/Little Drummer Boy," there's no denying how ridiculous these two Christmas clowns look, hamming it up even as they deliver a surprisingly faithful rendition of the classic holiday tune.

Watch the video below.

Justin Starling for Cumulus Media © 2012