The chairperson selects an object/idea/whatever and announces whether it's animal, vegetable, mineral, and/or abstract. The others have to ask questions to figure out what it is. Whomever guesses the object correctly is given the chair for the next round; repeat ad nauseam.
*curtsies to fanfare* That'll teach me to take some time to read the questions and replies. That's the first time I've actually deduced the answer [and rab - peach puff would have been my next guess] :-)