VIDEO: Drew Barrymore and Jimmy Fallon switch lips on 'Tonight Show'

Drew Barrymore was on The Tonight Show starring Jimmy Fallon on Friday night and then inevitable happened: they switched lips!

After Drew expresses interest in interviewing herself, she and Jimmy swap mouths for an in-depth chat that ends with a Grease duet.

A great way to end our week (or start the weekend).

Jimmy Fallon has reinvigorated late night viewing this year. I'm so happy!

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