The moment Justin Bieber starts tanning, binge drinking or referring to girls as grenades, I'm personally calling up his mother. But in an admittedly amusing campaign, the Biebs joins forces with the boys of the 'Jersey Shore' to promote his upcoming movie 'Never Say Never.'

In one spot, Mike "The Situation" Sorrentino is a professor, standing in front of a chalkboard giving a lecture on something he knows well: pimping. "Justin Bieber's movie, plus Valentine's Day... is equal to a Situation Zone," he warns his students.

The Biebs then joins the juice head, the two wearing matching glasses, and answers Mike's question confidently. "That, boys and girls, is a situation," he explains with a grin. See for yourself below:

In the other 'Never Say Never' promo, Paul "DJ Pauly D" DelVecchio lets his trademark hair fall flat, rocks some skinny-leg purple pants and admits he can't stop thinking about the Biebs. "These thoughts keep running through my mind... That voice, that talent. This guy would kill it at the shore," he says. "I think I've got Bieber Fever. I've gotta see this movie."

And then, just like an angel, the Canadian pop sensation comes to the rescue. The 16-year-old busts through the door, hands Pauly D 'Never Say Never' movie tickets and tells the 29-year-old to, "Think of me as your wingman." The unlikely duo then proceed to fist pump together. Watch the clip after the jump.