The SNL alum joined Denis Leary and Jimmy Fallon on Tuesday's show
Credit: Douglas Gorenstein/NBC

Oh, how we’ve missed Molly Shannon‘s dance moves.

The former Saturday Night Live star got her Mary Katherine Gallagher on as she performed some nonsense karaoke on Tuesday’s Tonight Show.

Starting off with her trademark “superstar” move, she sang TLC’s “Waterfalls” with lyrics like “Don’t throw Jason’s Barbie dolls.”

Denis Leary (who we think was channeling a Vegas lounge singer) performed the next song, taking on Def Leppard’s “Pour Some Sugar on Me” and, honestly, they could have been the original lyrics and we wouldn’t have known the difference.

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Then Jimmy Fallon began singing “Thinking Out Loud” by Ed Sheeran, before the other two joined in.

Next time, can we suggest a lip sync battle? We have the feeling Ms. Shannon would crush it.