Universal picked up Dirty Grandpa as a spec script in 2011 and later put it turnaround, now Bill Block is packaging the pic for QED to sell internationally. The film stars Robert De Niro as a recently widowed older man who gets to know his grandson (Zac Efron) who is about to marry a girl who is not right for him. Dan Mazer — who co-wrote Sacha Baron Cohen’s Borat, Bruno and The Dictator will direct from a script by John Phillips. Block, Barry Josephson, Jason Barrett, and Michael Simkin are producing. CAA is handling U.S. rights.