Mischievous octogenarian Irving Zisman (Johnny Knoxville in heavy makeup and prosthetics) and his 8-year-old grandson Billy (Jackson Nicoll) embark on a debauched cross-country road trip in this geriatric JACKASS spin-off from Paramount Pictures and MTV Films. Upon learning that his wife of 46 years has died, horny granddad Irving Zisman is eager to get out and sow his geriatric oats. Irving's lecherous journey is soon threatened, however, when his crackhead daughter shows up at the funeral with his grandson Billy in tow. It seems that Billy's mother has gotten in trouble with the law once again, and she needs Irving to drive him across the country to be with his deadbeat dad -- who only agrees to take the boy after learning that he'll receive $600 a month in government support. Determined not to let the little runt get in the way of his good times, Irving stuffs his wife's corpse in the trunk of his classic Lincoln town car, plops Billy in the passenger seat, and hits the road, making occasional pit stops to engage in some bawdy hidden-camera antics along the way.