Jimmy Fallon is known for performing memorable duets with music stars on NBC's "Late Nigth with Jimmy Fallon" ("Whip My Hair" with Bruce Springsteen and "A History of Rap" with Justin Timberlake, to name a couple). But for the first time, the funnyman is putting a collaboration from his late-night show up for sale.

"Drunk on Christmas," a song that Fallon originally released as a solo single last December, is now on available on iTunes in the form of a live duet with country star John Rich, who performed the track with Fallon during an episode that aired last Thursday (Dec. 16). "That's why I'm drinkin', drinkin', drinkin', I'm gonna drink all day," Fallon and Rich sing on the holiday tune's chorus. "I'm going home for Christmas and my family's insane/Just gotta make it through the day, and there's no other way/Gonna get drunk, drunk, drunk on Christmas."

Of course, "Drunk on Christmas" isn't Fallon's first foray into selling music. The former "SNL" star released his own full-length album, "The Bathroom Wall," in 2002, as well as the charity single "Car Wash for Peace" in 2007, to benefit military families.