Jimmy Fallon And Drew Barrymore Dirty Danced And Will Ferrell Cried. It Was One Wild Night.

Just when you think Ferrell is going to win, Fallon pulled out a secret celebrity weapon.

If you haven't seen any of Jimmy Fallon's "lip sync battles" yet, this is the one to see.

Forget karaoke. The "Tonight Show" host brought a popular pastime back from the '80s in a recent episode of the show. It's a deliciously awkward game that always ends the same way... with cheers and laughs.  

Will Ferrell is the first to throw down with Beyoncé's hit "Drunk In Love."

Jimmy Fallon responds with a mic-dropping lip sync of "Since U Been Gone" by Kelly Clarkson.

Kevin Hart tries to heat things up with John Legend's "All of Me," but Ferrell and Fallon just point and laugh.

So he makes Will Ferrell cry.

Just when you think it can't get any weirder (and we mean that in the best way possible), Will Ferrell does "Let It Go" from "Frozen" with pixie dust and all.

Who can top that? Fallon can, when he brings out his secret celebrity weapon, Drew Barrymore, to reenact a famous scene from "Dirty Dancing."

Kevin Hart ends it with a roar, lip syncing to a Katy Perry hit.

We think the audience might've liked it a little.

Is lip sync is the new karaoke?

Thanks to Fallon, lip syncing is trendy again, but it's not just for celebs. In the '80s, it was almost as popular as karaoke is now. 

People would pick a song, dress the part, learn the dance moves then battle it out in nightclubs and malls. There were prizes to be won and bragging rights to be had.

Don't be surprised if you start seeing that happen again. Maybe they'll host battles at your fav nightclub or at the very least, at your bestie's Saturday night parties. 

The best part? You don't need a good voice, just some enthusiasm and the ability to laugh at yourself. 

Check out the lip sync in action in the video below by "The Tonight Show."