What really surprised me the most about the Dirty Grandpa movie was the bond between Zac Efron and Robert De Niro. They had a great comedic rapport that actually felt genuine, which in turn helped the more insane scenes and helped in retaining some resemblance of realism in the film. The remainung cast were enjoyable as well, especially Aubrey Plaza as the overtly slutty college girl who continuously surprised me with every grotesque statement she made. Oddly enough, De Niro felt right at home here. It is as if his character from the " Meet the Parents" went off and instead decided to go on a spring break road trip with Zac Efron. Zac Efron also proved that he is also a comedic person. Overall, this is not one of the best movies I have seen,but it sure is a hilarious movie thta will make you laugh hard. I wouldn't recommend it to minors tho.