1) You are asked: What do you prefer, (option1) or (option 2)?
2) You think about your decision and the other players try to guess what are you going to decide.
3) Everyone counts at the same time...1...2...3!
4) Everyone shows at the same time 1 finger if they thought you were going to choose the first option, or 2 fingers if it is the second. You show 1 finger if your decision is option1 and 2 fingers if your decision is option2. All of you at the same time!
5) The ones that thought you were going to choose the other option... DRINK!!
6) If the answer is the same for everyone, you tell someone to DRINK!