Julianne Hough Sings About Sex In Front Of Her Brother: See The Awkward ‘Lip Sync Battle’ Clip

Julianne Hough’s brother has watched her perform some pretty racy routines on Dancing with the Stars over the years, so Derek Hough probably doesn’t bat an eyelash whenever he sees her shaking her booty in skimpy outfits. However, what Derek hasn’t had to do is watch his sister sing about having sex from the male point-of-view, and it turns out that this completely grosses him out.

Entertainment Weekly recently shared a preview of Julianne Hough’s performance in an upcoming episode of SPIKE TV’s Lip Sync Battle, and it’s pretty raunchy. Julianne is mouthing along to The Lonely Island song “I Just Had Sex” in the clip below, so she has to keep a straight face while singing about crotch-thrusting beside two topless guys.

As you can see, Derek Hough is completely mortified — the look on his face is priceless, and he eventually has to cover his eyes. Julianne even manages to make Chrissy Teigen’s jaw drop.

This isn’t the first time Julianne Hough has put her brother in an awkward position. During a recent interview with People, Derek said that he was uncomfortable about the idea of dancing with his sister when he was younger, but his parents pushed him to partner up with Julianne.

“It’s been weird in the past. I started dancing because I wanted to be around girls. My parents were like, ‘Why don’t you dance with your sister?’ I was like, ‘No, you’re defeating the entire purpose of why I’m dancing!'”

Derek doesn’t mind hitting the dance floor with Julianne now, but he probably won’t watch his sister lip sync ever again — he might advise her to stick to dancing and actual singing. As the Inquisitr previously reported, she’ll get to do both when she stars in FOX’s live Grease musical.

Dancing with the Stars fans got to see Julianne Hough showing off some of her fancy footwork during last night’s show, and the DWTS judge’s dance was nothing like her dirty Lip Sync Battle gyrations — it didn’t include any simulated sex acts. Julianne got to choreograph a polished Argentine Tango performed by her cousin, Riker Lynch, and his pro partner, Allison Holker. In the video below, Julianne points out that she hasn’t danced on the show since last season, but Riker thinks that adding a two-time mirrorball trophy winner to his routine is a smart move. It turns out he was right — he and Allison got a perfect score.

You can check out Julianne Hough’s full Lip Sync Battle performance on Thursday, May 14 at 10 p.m. ET on Spike. She’ll also be back in the judge’s chair for tonight’s elimination episode of Dancing with the Stars.

[Image credit: Julianne Hough/Instagram]