Ducky or Moose
This is a game, where one user asks a question, to which the answer is either "Ducky" (Duckies) or "Moose", and another user answers it, and then asksanother such question. Example:
User 1: Who can wear the yellow color?
User 2: Duckies. Who can adopt moosles?
User 3: Moose. Who live in the Ducky Region? (etc.)