Despite having been booted off ABC's singing competition series, 'Sing Your Face Off' last week, Sebastian Bach nonetheless returned for an encore performance last night (June 14). The video is embedded above.

Bach joined another former contestant, actor/comedian Jon Lovitz to sing LMFAO's 2011 party rock anthem, 'Sexy and I Know It.' Bach, who -- true to the song's lyrics -- has never been afraid to show that he has passion in his pants, wiggle-wiggle-wiggled with the star of 'Coneheads' and City Slickers II: The Legend of Curly's Gold' while dressed like Redfoo and Sky Blu.

And even though the former Skid Row singer may brag about being sexy and knowing it, Scott Ian of Anthrax has a considerably different opinion. At a roast last month, Ian zinged Bach by saying that he hasn't aged particularly well.

“You’re the one man who makes Dee Snider look like he’s aged well," he said. "Over the course of 20 years, you’ve gone from Paris Hilton to Lemmy — you’re like Dorian Gray, but backwards. Drugs are bad, kids.”

In previous weeks on 'Sing Your Face Off,' Bach appeared as Adam Levine, Lady Gaga, Willie Nelson and Freddie Mercury, Last night's episode was the season finale.