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.
rab, close, very close, but its bigger than that. Conversation is a form of this. ZK, as for rab. Chalky, getting cooler. Raak, sorry must have been a simulpost, you weren't there before. A greeting is part of this but it's the bigger picture I'm after.