“Jackass” ringleader Johnny Knoxville reprises his role as 86-year-old Irving Zisman in the story of a crotchety old man unexpectedly saddled with the care of his 8-year-old grandson, Billy (Jackson Nicoll). The two generations of troublemakers soon develop a bond as they hustle their way across the heartland of America pursuing hijinks and pulling pranks on unsuspecting, real-life people — male strippers, disgruntled child beauty pageant contestants (and their equally disgruntled mothers), funeral home mourners, biker bar patrons — all of whom had no idea they were starring in a hidden camera film. Blu-ray Extras: Behind-the-scenes vignettes, deleted scenes, ” Alternate Reactions from Real People.” Vitals: Director: Jeff Tremaine. Stars: Johnny Knoxville, Jackson Nicoll, Greg Harris, Georgina Cates, Kamber Hejlik. 2013, CC, MPAA rating: R, 91 min., Comedy, Box office gross: $100.020 million, Paramount.