Dolly Parton stopped by The Tonight Show Starring Jimmy Fallon in 2018 to join him for a hilarious holiday medley that was infused with the holiday spirit -- and perhaps, Parton joked, a bit of grandma's moonshine! Readers can press play above to watch the pair cut up against the backdrop of some Christmas favorites.

Fallon opens the lightning-round mashup medley with "Winter Wonderland," and then Parton takes over with "Rockin' Around the Christmas Tree." Fallon ends the song with the line, "Deck the halls with boughs of DOLLY," and without stopping to catch their breath, the festive duo moves on to "Jingle Bell Rock."

Next, Parton feigns devastation when Fallon breaks the bad news that "Grandma Got Run Over By a Reindeer," and the pair quickly starts "Sleigh Ride." Finally, Fallon flubs "We Need a Little Christmas" and nearly doubles over in laughter before Parton saves him for the finale.

Parton and Fallon burst out laughing repeatedly during the performance, which only added to the hilarity. They kept the audience in stitches with their improvised adaptations of the beloved Christmas carols.

In 2020, Parton and Fallon teamed up again, for a duet version of "All I Want for Christmas Is You." Their rendition of the now-classic appears on Parton's A Holly Dolly Christmas album.

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