Compilation of additional footage from the hidden camera comedy about a depraved old man taking his grandson on a road trip, including behind the scenes footage examining the film's old-age make-up effects and the way the crew was concealed from the unsuspecting public. Starring Johnny Knoxville and Jackson Nicoll.

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, and a behind-the-scenes peek at the idiocy it takes to make a hidden camera movie in public.