WHY ARE FARTS SO FUNNY/HOW DID WE MISS THIS!
A big ole butt toot!
Well, you're going to have to press PLAY (below) to decide for yourself!
The Late Night host brings back by popular demand the legendary faux folk duo Black Simon and Garfunkel to cover the amazing Roar!
Gotta give it to ?uestlove - his roar may even be better than Katy's herself!
Ch-ch-check out the video (above) to hear the adorable new take on one of the biggest hits of 2013! When can we get this version on iTunes?