How to Play: Twenty Questions
How to play: One player is chosen to be the answerer, and that person chooses a subject, which is not revealed to the other players, who will be the questioners. The questioners take turns asking the answerer questions that can be answered with "yes," "no" or "maybe." If 20 questions are asked without a correct guess, the answerer has stumped the questioners and continues to be the answerer in the next round.
The rules: The answerer is not allowed to lie about the subject.
How to win: Guess the correct answer before the 20 questions have been asked. The winner becomes the answerer in the next round.
What else you need to know: A variation of this game is Animal, Vegetable, Mineral. In this version, the answerer tells the questioners whether the subject is animal, vegetable or mineral before the guessing begins.
Related: How to Play: Hopscotch
Start by teaching him that it is safe to do so.