
De Niro, unsurprisingly given the nature of the bad taste jokes that are on display, plays Dick, an elderly recently widowed man that decides to take his straight laced grandson Jason (Zac Efron) to Florida so that he can show him how to live life to the full before he gets married to his controlling fiancée. As the pair set out on their road trip the jokes become cruder and cruder as Grandfather and Grandson indulge in sex and drugs.
If you can stomach the sight of Dick being caught whilst in the middle of a number three (see the film and you'll know what I'm talking about) and find jokes about dicks, breasts and bums funny then there is a strong likelihood that you might find Dirty Grandpa enjoyable. For everyone else I would suggest that you give this one a miss.