The term 'Copy a Kitty' is a reference to the popular children's game of the same name. In this game, players must match the sounds of cats by using three words: MEW, PURR, and meow. The first word, MEW, is a three-letter word that describes the sound a cat makes when it is content or happy. The second word, PURR, is a four-letter word that describes the sound a cat makes when it is relaxed or content. The third word, meow, is also a four-letter word that describes the sound a cat makes when it is hungry or in distress. By correctly matching the sounds of cats, players can copy a kitty and win the game.