There is a variant of this game around here, the "Animal, Vegetable, or Mineral" variant, but this one encompasses any subject you want. Surely we all know how to play this game. If not, well it's simple. One person, the "answerer" chooses a subject (object) but does not reveal it. The others, "questioners", ask simple "Yes" or "No" questions e.g. "Is it heavier than a book?" If a "questioner" guesses the subject before 20 questions are asked, they are the new "answerer". If 20 questions are asked without a correct guess, the "answerer" goes for another round.
Rules:
1. An "answerer" must not lie.
2. "Yes" or "No" questions only.
3. Wait for the "answerer" to answer your question before asking a new one.
Edit: 4. If multiple questions have been answered, the answerer must specify which questioner is being answered.
Who wants to start?