The first trailer for "Dirty Grandpa," starring Robert De Niro and Zac Efron, has finally arrived. The film does not come out until January 2016, but the first look at the movie is packed with tons of foul-mouthed humor.

"Dirty Grandpa" tells the story of Grandpa Dick (De Niro) and his grandson Jason (Efron) as the two travel to a retirement community in Boca Raton, Fla. from Atlanta, according to Entertainment Weekly. Along the way, the odd couple gets into all sorts of mischief, including a pit stop at the popular spring break party destination, Daytona Beach, Fla.

The character of Jason is a straight-laced control freak, who spends every last minute of the road trip talking to his controlling fiancée, played by "Dancing with the Stars" judge and budding actress Julianne Hough. Grandpa Dick does not think his grandson's future bride is a good fit for him, and tries to loosen him up throughout the trailer, and by the looks of the party scenes, Grandpa Dick does a great job.

"I just smoked crack?" Efron's character asks a partygoer at one point in the trailer, "I just smoked crack!"

"Dirty Grandpa" also stars Aubrey Plaza, Jason Mantzoukas, Danny Glover, Adam Pally, and Dermot Mulroney, according to E!.

Check out the trailer below.

Watch BuzzFeed's exclusive premiere of the Dirty Grandpa trail...Watch BuzzFeed's exclusive premiere of the Dirty Grandpa trailer starring Zac Efron and Robert De Niro! bzfd.it/1NAPl7c

Posted by BuzzFeed Celeb on Wednesday, October 28, 2015