Features A Collection of Priceless Pranks as Bad Grandpa is Unleashed by Howard Gorman on October 23, 2013 share 0 One of the most cantankerous, obnoxious, rudest characters ever to grace the Jackass movie franchise has to be Johnny Knoxville's homegrown creation, Irving Zisman. The foul-mouthed, often partially 'au naturel, irate OAP's mayhem had Jackass read more