Wikipedia:List of hoaxes on Wikipedia/Who's closest

Who's closest is a guessing game, often played at parties or on long journeys  because it requires no board or other materials.

Play starts with one player thinking a random thought. The rest of the players then take turns trying to guess what the speaker is thinking of. Once everyone has guessed the thinker reveals the actual thought and everyone takes it in turns to justify why they were closest. The thinker decides who was closest and that person becomes the next thinker.

The ruling of the thinker is often heavily influenced by how humorous the justifications were. Unless a particular guess was very good, the decision is based mainly on how funny the justification was.

Example:

John Smith: Let's play a game

Barnaby Dawson: How about "Who's closest"?

John Smith: You're thinking about "Who's closest".

Barnaby Dawson: You win.