Scissors.

About Scissors

Scissors is a party game in which the rules of game are hidden from some of the players. Players will sit in a circle and pass a pair of real or imaginary scissors to the player to the left of them. The scissors may be passed open or closed, depending on a rule which is known only to one or two players. As each player passes the scissors they will declare whether the scissors are open or closed as they attempt to deduce the rule. A player wins when they deduce the rule, so consistently pass the scissors in the correct form. Variants of this game have been recorded as early as the nineteenth century.