Johnny Knoxville in njegovi pajdaši so spet tu. Tako kot prva dva filma je tudi najnovejši sestavljen iz serije skečev, v katerih Johnny in ostali preizkušajo razne kaskaderske podvige in otročje potegavščine, ki jih obogatijo s svojimi smešnimi preoblekami in nenavadnimi pripomočki. Ne pozabite, da njihovih podvigov pod nobenim pogojem ne smete preizkusiti doma.
'Jackass 3D' opens with the entire cast all lined up, each wearing a different color of the rainbow, in front of a rainbow colored background, each in turn being attacked in various ways. Some of the footage is slowed down for maximal effect. This is repeated again at the end of the movie with additional explosions mixed in with gallons of water to wash away the cast- chaos is resumed. Throughout the movie the team are subjected to the usual foray of physical abuse from team members or perform hilarious stunts (including some of the more stomach turning stunts such as the Sweat suit cocktail, Toy Train Eruption and Poo Cocktail Supreme - not for the weak stomached!).