Shirtless Zac Efron caves under Seth Rogen's bullying in new promo video for Neighbors

He plays a cocky frat boy who seems to get the better hand of his family man rival in the upcoming comedy Neighbors.

But Zac Efron was clearly being bested by his onscreen enemy Seth Rogen in a promotional video for the film posted to his Instagram, on Monday. Appearing to fold under Seth's bullying, the 25-year-old High School Musical alum agrees to keep his 'pretty mouth shut' after being told to take a backseat in the social media advertisement.

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