I’m going to take a stab at this one and say that Dirty Grandpa isn’t going to be very good. When the basis for most of your comedy is Robert DeNiro cussing you’ve got some work to do. The new red band trailer does show that he’ll be cussing a lot, though. Like… a lot.
Sadly, Zac Efron seems to only be getting cast in comedies like this now. It’s fine for DeNiro who had a fully career, but Zac has some skill with the acting and should be a bit more discerning. Naked Macerena probably isn’t where he thought his career was going and when he pictured working with DeNiro I promise you it didn’t look like this.