trigger worded! For example type in the word 'sigh' and you cat tail will drop depressingly to the ground giving only a few pathetic flickers.. Type in 'wrap' and it will wrap sexilly around you..type in 'curl' and it will curl up behind you like a monkey tail..My favorite is when you type in 'grrr' the tail does that annoyed flick that cats do when they are pissed off. Its really very funny