LOS ANGELES-Enticing fans with the promise of the franchise's most dangerous stunt yet, a new trailer for Jackass: Best And Last released Wednesday showed an aging Johnny Knoxville trying to climb a staircase without a handrail. Holy shit, what the fuck am I doing?" said the 55-year-old Knoxville, who was seen in the footage shrugging [...]The post New Jackass' Trailer Shows Aging Johnny Knoxville Trying To Climb Staircase Without Handrail appeared first on The Onion.