Zac Efron Cruises With Robert De Niro in New 'Dirty Grandpa' Poster

Zac Efron looks completely unamused by Robert De Niro in a brand new poster for their upcoming film Dirty Grandpa.

The 28-year-old actor can be seen cruising in a convertible with Robert as he smokes a cigar in the passenger seat.

PHOTOS: Check out the latest pics of Zac Efron

In the film, Zac‘s straight-laced character Jason Kelly is tricked into driving his foul-mouthed grandpa to Daytona for spring break just a week before his wedding. Chaos ensues including frat parties, bar fights and an epic night of karaoke.

In case you missed it, check out the entire trailer for the film!

Dirty Grandpa hits theaters in January 22, 2016!