Dirty Grandpa

Dirty Grandpa Genre: Comedy Directed by: Dan Mazer Written by: John Philips Starring: Zac Efron, Robert De Niro Release Date: August 12, 2016 Watch the movie trailer of Dirty Grandpa below: No Trailer available yet. Movie Plot: Right before his wedding, an uptight guy (Zac Efron) is tricked into driving his grandfather,