Jimmy Fallon and His Old ‘SNL’ Pals Just Re-Did Their ‘I Wish It Was Christmas Today’ Skit (Video)

Ariana Grande joined them to add some real musical legitimacy

Remember when Jimmy Fallon, Chris Kattan, Tracy Morgan and Horatio Sanz entertained (and confused) “SNL” viewers with their “I Wish It Was Christmas Today” musical performance? Guys, that was 18 years ago.

That means the fellas were overdue for a reunion. On Tuesday’s “Tonight Show,” Fallon got the band back together — but the quartet became a quintet with the addition of Ariana Grande.

For anyone in on the joke, the sole real singer among the bunch did exactly as much heavy-lifting as you might think.

I don’t care what your mama says, watch the video above.

And remember the old times below. The original is from “Saturday Night Live” Season 26, way back in 2000.