Have you ever played 20 Questions?
It’s a game where you think of something and the other person (or the 20Q electronic toy) has to guess what you are thinking of by asking you 20 questions, to which you can only give one word answers; yes, no, maybe, etc.
It’s good fun and you can also play the game online. Click on the image and try it... you will be surprised! It can read your mind!
