Twelve-year-old Andy Larkin, the greatest prankster on Earth, unleashes a flurry of practical jokes on the residents of East Gackle.Twelve-year-old Andy Larkin, the greatest prankster on Earth, unleashes a flurry of practical jokes on the residents of East Gackle.Twelve-year-old Andy Larkin, the greatest prankster on Earth, unleashes a flurry of practical jokes on the residents of East Gackle.