knifey-spooney

A game in which two or more players compare knives; the player with the largest knife is the winner. However, any player may choose to use a spoon instead of a knife. Any spoon beats any knife, but a player with a spoon is disqualified if another player recognizes and announces his or her use of a spoon.

"That's not a knife. THIS is a knife!"

"That's not a knife, that's a spoon."

"Ah, I see you've played Knifey-Spooney before!"