02/07/2012 03:17 pm ET

Justin Bieber Plays Prank On Proactiv Customers

Noted prankster Justin Bieber has been known to play practical jokes on both pals, such as tour mate Willow Smith, and fast-food attendants. Even Taylor Swift has been a target of his high jinks.

So, we weren't surprised to see this new Proactiv spot, in which he tricks unsuspecting teens into thinking he's the director of a commercial for the acne treatment. The heartthrob hides in a booth and gives odd instructions via megaphone, such as "Smile like you just got your allowance" and "Smile like you just lost your cat ... but now you've found him" in a variety of eccentric accents. Finally, he steps out to reveal his identity to the squealing fans (and offers skincare product recommendations while he's at it).

Perhaps the Biebs is honing his comedic chops for his upcoming "Saturday Night Live" performance.

He tweeted: