We can say with no shame we have not one clue as to how this all happened. Did MTV approach Bieber's people? Did Pauly D's new manager Larry Rudolph promise Biebs a duet with Britney if Pauly D could share a screen with him? We're talking about the below video, in which "DJ" Pauly D dresses as Justin Bieber to promote the singer's new movie, Never Say Never. The D rocks a total Bieber look—hoodie, purple skinny jeans, high tops, and of course, the requisite bangs. We're not sure about the pearls (WTF?) on JB, or the fist-pumping, or really anything...what's next, Bieber as a gorilla juicehead?