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Justin Bieber's infamous stache may be here to stay, Beliebers.

The Biebs tweeted a teaser trailer for his upcoming film Believe on Friday. In the clip, the pop sensation jokes that his facial hair is a symbol of manhood. What else is adult about the the 19-year-old? His taste in beverages. "Speaking of grown men, I'm drinking coffee right now," Bieber says.

He may be getting older, as his mentor Usher and mom Pattie Mallette point out, but, by the looks of this video, Justin still likes to goof-off. Check out his stair-walking "illusion."

Bieber's first film, "Justin Bieber: Never Say Never," is one of the highest grossing concert documentaries to date ($100 million) so the new movie will surely be box office gold. Believe hits theaters Christmas Day.