"My mom hasn't let me watch television since Miley Cyrus' tour."

Jimmy Fallon has never been a teenage girl. Taylor Swift, however, has. Still, the veracity that Fallon brings to his performance as a teen in his fake-talk-show-within-a-talk-show, 'Ew!,' is pretty striking -- he somehow seems like more of a teenage girl than his guest, who was a teenage girl mere years ago. It's madness!

Swift hit 'The Tonight Show', during which she appeared on the carnival funhouse that is Fallon's 'Ew!,' which imagines him as an over-the-top teen girl who hates everything. The singer/actress from 'The Giver' appeared as the nerdy Natalie, whose tragic appearance (tri-ponytails, Scrabble necklace) belies a deep love for classic Sean Connery-led cinema. Can she be a returning guest?