That teaser from a couple of weeks ago may not have adequately prepared fans for Dwayne Johnson's raucous rendition of Taylor Swift's "Shake It Off" on the Thursday premiere of "Lip Sync Battle."

There was shimmying, bouncing, hip thrusts and, oh, yes, a finger flipped directly at "Tonight Show" host Jimmy Fallon, an obvious challenge to the reigning king of lip sync.



Hosted by LL Cool J, “Lip Sync Battle” was developed by Fallon, John Krasinski and Stephen Merchant, based on the wildly popular “Tonight Show” segment. The series airs Thursdays on Spike TV.