Dolly Parton, Jimmy Fallon Totally Butcher the Finale of Their Big Christmas-Songs Medley (Video)

They need a little Christmas — and a little more practice

Jimmy Fallon and Dolly Parton started their Christmas-song medley strong on Friday. They finished it in the exact opposite manner.

The “Tonight Show” host and his country-music-star guest got together to do some duet caroling — but it all fell apart by “We Need a Little Christmas,” which was set to be the grand finale. Fallon fell to the floor in laughter.

Perhaps they hit the backstage egg nog a bit too hard last night.

Watch the video above. The epic fail won’t fail to put you in the Christmas spirit.