Tina Fey wanted to interview herself last night on The Tonight Show Starring Jimmy Fallon. So, naturally, she just flipped lips with her former "Weekend Update" co-host, Jimmy Fallon. Makes sense!

Of course, as with anything involving these two, what follows is improvisational hilarity. Fey and Fallon's chemistry is undeniable. The fact that they can't hold back their laughter makes the bit even funnier, too. The icing on the cake is a terrible "Endless Love" duet that could make Simon Cowell spontaneously combust.

[via Vulture]