Taylor Swift  made good on her preview of her character for Jimmy Fallon's Ew! skit  when she popped by the show Wednesday night. As Natalie, Swift is an endearing nerd with braces and glasses who's not allowed to watch TV because of a certain pop star. Meanwhile, Fallon is hysterical again as "Sara" (no h because h's are, you know), who stretches out her vowels like you wouldn't believe. Seriously, you have to hear Jimmy/Sara say "Pretty Little Liars." Want to see the rest of the skits like this? Check out our roundup of the other celebrities on "Ew!"