《蠢蛋搞怪秀：坏外公.5》 是杰夫·特里梅因导演的作品，发行于2014年（美国），由约翰尼·诺克斯维尔,杰克逊·尼科尔,Jack Polick,斯派克·琼斯,凯瑟琳·基纳,Marlon Davis,Quintin Duncan,Diyonte George,Anthony Lanier,Joseph Richmond,Christopher Smiley,Steve Harris,Dorothy Barnett,J.P. Blackmon,Sean Cliver等主演的一部喜剧片。
讲述了：Bad Grandpa .5 gives you a whole new perspective on the world of Irving Zisman with bonus scenes and pranks also featuring Spike Jonze as "Gloria" and Catherine Keener as Irving's wife "Ellie", plus a look at the evolution of Johnny Knoxville's naughty alter-ego, the makeup effects,