VIDEO: Sneak Peek - Julianne Hough Traumatizes Brother Derek on Next LIP SYNC BATTLE

Below, watch Julianne Hough traumatize her brother Derek in a raunchy lip sync of "I Just Had Sex" by The Lonely Island. See the full performance this Thursday at 10/9c on SPIKE TV's LIP SYNC BATTLE.

About LIP SYNC BATTLE:

Entertainment icon and two-time GRAMMY Award-winner LL COOL J will host SPIKETV's original series, "Lip Sync Battle," debuting April 2.

LIP SYNC BATTLE is already a huge viral sensation. Now SPIKE is taking it to the next level with its very own show, hosted by LL Cool J and with colorful commentary by social media maven and supermodel co-host, Chrissy Teigen.

Each episode will feature two A-list celebrities like you've never seen them before - synching their hearts out in hysterically epic performances. The mic is off, the battle is on!

Photo courtesy of SPIKE TV