Speech freak.

Find a person/sign.Run towards them/it.Before you get to them/it do the CC trick.While the cartridge is pulled out run up to them/it and when you are near enough to talk/read press 'A'.Push the cartridge back in.The message box will come up and often will be filled with all sorts of nonsense, weird characters, scrambled text, numbers and so on.Sometimes during or at the end of this text the game will crash. Also trying to do it to someone/thing that has coloured text in their/its message will normally crash the game.