When the Simpson family go to an Australian pub , Bart play with a pocketknife at the table and a man ask him : " You call that a knife ? " , and as the man draw a spoon from his pocket he say : " This is a knife . " The scene is a reference to a famous scene from Crocodile Dundee in which Mick Dundee is threatened by some thugs with a switchblade , and Mick take out a bowie knife and say ; " That 's not a knife ; that 's a knife ! " The Simpson family is shown a slide show by the US Department of State depicting a boarded up cinema with a sign out the front saying " Yahoo Serious Festival " , in reference to the Australian actor and director Yahoo Serious . Wez , one of the characters from the 1981 film Mad Max 2 : The Road Warrior , is seen in the Australian mob that chase Bart and Homer to the American Embassy .