'The Simpsons' Open Show With Ke$ha Lip-Dub (VIDEO)

In lieu of the intro they've been perfecting for 20 years, "The Simpsons" opened last night's episode with a one-shot, musical number set to Ke$ha's "Tik Tok." Whether it was done to mock the internet's love of lip dubs or not, there's no doubt it was incredibly entertaining.