《下流祖父》是由导演丹·梅泽尔执导的美国故事片。该片讲述了祖孙两个人所经历的一系列奇葩故事。年轻人杰森生性木纳，日子过得一板一眼毫无情趣，马上就要走入婚姻殿堂的杰森，被自己刁蛮的有控制狂的女朋友指挥的团团转，为此他好不烦恼。临近结婚的前一天，他去探望自己刚死了伴侣的祖父迪克。相比较杰森的内向，祖父迪克却是一个花心大萝卜，他生性风流，异性缘极好。看到孙子一点也不像自己，祖父迪克很是着急，他极力怂恿杰森悔掉婚约，重新再寻找一个更完美的伴侣。并且，他以让杰森陪自己散心为名，和杰森一起踏上了一条充满刺激的奇幻之旅。而和祖父一起出行一起生活的杰森，也对生活有了进一步的认识，学会了在任何时候都要面对自我，开心生活

Dirty Grandpa is an American feature film directed by director Dan Mezel. The film tells a series of wonderful stories experienced by the grandparents and grandchildren. Jason, a young man with a dull nature, lives a rigid life without any interest. Jason, who is about to enter the marriage hall, is being directed around by his savage and control-crazed girlfriend, and he is very troubled by this. The day before his wedding, he visits his grandfather, Dick, who has just died. Compared with Jason's introversion, grandfather Dick is a big carrot. He is romantic by nature and has an excellent relationship with the opposite sex. Seeing that his grandson was not like him at all, grandfather Dick was very anxious. He tried his best to encourage Jason to repent of the engagement and look for a more perfect partner again. And, in the name of letting Jason accompany him to relax, he embarked on an exciting fantasy journey with Jason. And Jason, who travels and lives with his grandfather, also has a better understanding of life, and has learned to face himself at any time and live happily