On the Kamp Krusty episode, when the real Krusty finally comes to the camp, and the kids rip his shirt off, he starts to button it back up. But in the next scene, his shirt was unbuttoned again.
Ah, good eyes. Now me, being an aussie, was deeply offended by the episode "Bart vs Australia". Our prime minister, John Howard, is not a drunken hick who floats around naked in a pool.... Oh, wait yes he is. My bad!! :P