It was "Bart vs. Australia" my least favourite episode. They think all Australians are into beer and that there are kangaroos everywhere... little do the yanks know! Damn stereotyping people!
Aha, that was the episode when Bart was thinking about that one affect how like the water always drains counter-clockwise in like America, so he calls somebody in Australia and he's on the phone for like, ever, and they charge him, and they like sue him, and he was about to get booted, then he like jumped awway and showed his ass or something like that