It’s a reference to Walbro, an editor who made pages about the Aracuan Bird (Google it) and the phrase "SLAPPALLAPPA LAPPALLAPPA CACATONEDITUCAN! TSE TUNG! TSE TUNG!" Ask Shabidoo or MrX or Cassie, they'll probably know something
i know its the aracuan, first the aracuan said "SLAPPALLAPPA LLAPPALLAPPA", then the toucan says "CACATONEDITUCAN", followed the 4 chinese guys repeatedly saying "TSE TUNG" 4 times