The rules are pretty simple, everyone stands in a line in front of you with a grape. You will close your eyes and all the players will either put the grape in their mouth or their hand, but either way will stand with their fist outstretched. When you open your eyes you will go down the line accusing them of either mouth or hand, if you are right they are eliminated. Keep going until one remains, if there is a tie you can declare them all winners or stage a rematch.

Scoring is, as always, completely arbitrary, you can award only the last ones standing or award points on a sliding scale based on elimination. Decide how you wish based on the number of players.

Doesn't have to be a grape, in fact it can be funnier if you use something a bit larger. If you're worried about choking possibility then do left hand, right hand.