It’s no secret that Kate Rockwell, Joey Calveri, Adam Dannheisser and the cast of Rock of Ages know how to party like it’s 1987, but they took their craziness to the next level in this silly new send-up of Ke$ha’s “Tik Tok.” Click below for shirtless (and pants-less?) dudes, Rockwell doing laundry in her undies, Dannheisser going hands-free at the urinal and more backstage ridiculousness in an awesome new music video by the cast of Rock of Ages.