This time, Justin Bieber was back on his drum set, but model Lara Stone was replaced by Roastmaster General Jeffrey Ross -- shirtless and in a long blonde wig.
Most of the promo involves Ross inappropriately stroking his stomach while a confused Bieber tries to keep him away.
"Who is this guy?" Bieber asks to his people off-screen.
"Hey man," Ross says, shaking Bieber's hand. "I'm your worst nightmare. Are you ready?"
"No…," a scared Bieber responds.