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1.
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-Spoony before!"
by I am so bored. June 10, 2004
 
2.
A game Australian in origin. Two opponents challenge each other to a comparison of knife blades, to determine who has the greater knife. When knives are to be produced, one player actually produces a spoon. If the opposing player correctly identifies it as a spoon, she/he wins the match.
"THIS is a knife!"
"That's not a knife; that's a spoon."
"All right, you win. I can see you've played Knifey Spoony before!"
by J. Stephen September 01, 2009
 
3.
A game where a stranger attempts to fool someone into believing or admitting a spoon is a knife.
Org. The Simpsons
"That's not a knife. THIS is a knife."
"That's a spoon."
"Well I see you've played knifey spoony before!"
by Josh Kolm May 25, 2008
 
4.
Game which is still winnable by remembering the admonition from a certain franchise starring Keanu Reeves: "There is no spoon."
You can't fool me with that knifey-spoony stuff.
by Fearman October 26, 2007
 
5.
A slang reference for playing the game 'Resident Evil: 4'. Based on the strategy of using knife attacks throughout the game to conserve ammo for sections when ammo is needed. Derived from a Simpsons episode in which two characters play 'knifey-spoony'. Also applicable for other games that involve killing zombies such as 'Dead Rising'.
We spent all afternoon playing knifey-spoony.
by entryinvalid March 03, 2008