The segment involving Adolf Hitler refers to a conspiracy theory that he survived World War II and escaped to Argentina. However, Hitler is shown appearing the same as he did when he was in power. Had Hitler indeed survived, he would have been 105 years of age at the time the episode aired.
While taunting Bruno Dundridge on the phone, Bart says, "Hey, I think I hear a dingo eating your baby." This is a joke about the Azaria Chamberlain disappearance.
"That's not a knife: This is a knife!" is a famous line from the film Crocodile Dundee, said by the title character after a robber uses a pocket knife to try and rob him; Dundee pulls out a Bowie knife as he says the quote, intimidating the robber himself.
During the chase scene from the Australian Parliament, a Mad Max motorcycle gang member can be seen in the crowd.
During the slide show presentation, a slide with plan "B" depicting Fidel Castro in crosshairs is seen (which the government official promptly eats). This was a reference to a conspiracy theory that the U.S. Government, after the failure of the Bay of Pigs Invasion, attempted to have Fidel Castro assassinated.
The bullfrogs destroying the Australian's crops is a possible reference to Cane Toads which were introduced to Australia and destroyed many of Australia's plants.
The booting punishment is a reference to the 1994 caning of American teenager Michael Fay, who was caned several times by Singaporean authorities for vandalizing cars.
The beer brand that the Australian adults are frequently seen drinking is Foster's (which is, in real life, an Australian brand), except with a kangaroo instead of the "F" on its logo.
Trivia
Despite Homer being very much against the Australians' proposed "booting" punishment, Homer was previously amused when a very similar looking boot struck Bart in the butt in "Burns' Heir". Homer was defending his pride (as well as USA's).
While The Simpsons is prone to some errors simply for comic effect, in this particular episode, the supposed scientific knowledge of drains flowing differently in the Southern Hemisphere is actually a myth. The Coriolis effect is indeed accurate, but it is only seen large systems such as eddies, whirlpools in the ocean, and cyclonic storms such as hurricanes and tornadoes. For small-scale cases such as drains and toilets, there are too many other more-important factors for the effect to make a difference (spin imparted by water's flow, angle, friction, etc.).
Contrary to the implication in the last shot of the episode, koalas would not do any harm in America. They would likely die of hunger due to the fact that they only eat eucalyptus leaves. Koalas can eat other things, they just prefer to eat eucalyptus.
It would later be revealed that the Simpsons' ancestors were exiled from Australia.
The Simpson family flies by airline "Transhemispheric Airlines".
In this Episode's French version, Tobias the Australian Boy is Named Toby by His Father. Toby is short for Tobias.
Goofs
Bart called for Burkina Faso searching for answers about the idea of the toilet spinning the other way in the Sothern Hemisfere, but Burkina is in the North Hemisfere.
