Tina Fey and Tituss Burgess Take Turns Insulting Each Other in a Surprise Broadway Duet

The actors shock the audience with an unexpected performance together

Well, Tituss Burgess isn't singing about "peeno noir," but it's still equally captivating. 

In a surprise duet between the Unbreakable Kimmy Schmidt actor and the show's executive producer Tina Fey, the stars duked it out on stage at the MCC Theater's annual MISCAST Gala. 

For those unfamiliar with the yearly Big Apple production, Broadway stars unite to perform songs they wouldn't ever perform in real life. Burgess, who previously sung his heart out in Broadway shows like Jersey Boys and The Little Mermaid, is no stranger to the excitement of live theater—or the ability to improvise when something unexpected pops up.

This time the surprise was the queen of improv herself, former SNL cast mate Fey, who unexpectedly leapt out of her seat in the audience to join the actor  for a rendition of "You're Nothing Without Me" from the 1989 show City of Angels. 

The only thing more hysterical than Burgess and Fey singing together like bonafide thespians is them flinging insults at each other in the process. 

After Fey publicly declared he has no shame by referencing his new line of wine—"Peeno by Tituss?"—they move on to the grand finale. 

"A puppet, an upstart, a loser who's destined to fall. I'm everything you always wanted to be," they croon out in unison. "Let's deal with the issue: You wish you were me. You're nothing without me."

Bravo! Encore!