Pincemi et Pincemoi sat in a boat. Pincemi drowned, who remained? A common game of words adopted by children all over the world.The rules are clear, the one to whom it is applied answers as if there is nothing to it and gets pinched. 

The right answer summons an agreed physical offence of one on the other.

The primacy of the appeal doesn't enable not to reply.

He who initiates the game directs his game mate to a dead-end path.