Gwyneth Paltrow back on 'Glee': Do you think she's 'Sexy'?

Gwyneth Paltrow returns to "Glee" as Holly Holiday for an extremely classroom-inappropriate performance of "Do You Wanna Touch Me." Clad in a leather jacket, the substitute teacher recruits Brittany and Santana to sex it up with her for the rest of the glee club.

Obviously, they're more than willing. They're Brittany and Santana, after all.

The episode is titled "Sexy," so it's not surprising that the leather jacket doesn't stay zipped up long, and pretty soon even the audience is practically rending their garments. One person who is definitely, um, affected by Holly's little number is Mr. Schuester (Matthew Morrison).

With Emma currently occupied by John Stamos, Schuester sets his sights on Holly as his next love interest. And after a performance like this, who can blame him?

"So, just remember, when you have sex with someone, you're having sex with everyone they've ever had sex with," she reminds the kids later. "And everybody's got a random." Oh, right, we forgot to mention -- this week, she's the sex ed teacher.

Though we think Holly probably could've found a better venue for this performance, we do dig her cover of the Joan Jett classic.