I'm a huge faun of DeNiro but this was such a shame to see how far he's fallen. Script must have been written by a horny kid because there was not one redeeming scene at all. Don't waste your time; I'll never get back the time I wasted thinking it will get better.

Just an awful movie, poorly written and with not an ounce of wit. I don't mind 'crude' or 'politically incorrect' if it's clever ... look at Amy Schumer and Ricky Gervais, but this is just unfunny 5 year old stuff with gratuitous opportunities for Zac Efron to get naked

With a title like Dirty Grandpa, you can fathom this is a crude, low brow comedy. It wants to shock you and beat you with a serious message of having fun because life is short. The trouble is it is not funny with a rather generic and forgettable plot. A lot of the crude comedy has been done before in those Hangover films and its rip offs.Jason (Zac Efron) is a bland corporate lawyer engaged to hectoring Meredith (Julianne Hough) who is even more boring. When Jason's grandma dies, he gives his grandfather Dick (Robert De Niro) a ride to Florida after the funeral. Dick is foul mouthed and on the lookout to have sex so soon after his wife has died. His crude behaviour shocks Jason who catches his grandpa jerking off to porn. Dick meanwhile is appalled with his straightlaced grandson who is following in his father's footsteps. Dick thinks he is getting married to someone unsuitable. He should be having fun, deep down he thinks his grandson is a free spirit. Dick wants to have fun after 40 years of marriage and life is short for him.Jason encounters Shadia (Zoey Deutch) an old college friend who he finds a genuine affection for, when he is not getting into scrapes and scraps with his grandpa who himself is romancing the much younger Lenore (Aubrey Plaza.)To my kids, Robert De Niro is the guy from those 'Meet the Parents' series of comedies. When I was younger De Niro was the guy from Taxi Driver, Raging Bull, The Deer Hunter, The Godfather II. We would debate whether he was the greatest actor in the world.Dirty Grandpa just shows that Hollywood doesn't know what to do with old great actors like De Niro and Pacino who seemed to have been reduced to making embarrassing comedies. Maybe Sean Connery and Gene Hackman had the right idea by just walking away from the industry.

A good movie having a genuine plot. its not like those comedy movies who offer only comedy but now plots, Its worth watching , quite entertaining scenes in the movie to keep you in it. If you are really in a bad mood, so this movie will surely change your mood :)