But based on the trailer, Efron doesn't stay wound up for too long — his grandfather convinces him to go to Daytona Beach for Spring Break, much to the chagrin of his fiancée (Julianne Hough). Down there, DeNiro gets lucky when he meets a young woman (Aubrey Plaza) with a thing for older dudes and some seductive zingers, like "I want you to tear open my bra like it's a social security check."
Also: Efron smokes crack. (Accidentally. Sort of.)
Dirty Grandpa opens in January 2016.