The Game

Rules
There are three rules to The Game:
Everyone in the world is playing The Game. (Sometimes narrowed to: "Everybody in the world who knows about The Game is playing The Game", or alternatively, "You are always playing The Game.")
Whenever one thinks about The Game, one loses.
Losses must be announced to at least one person (either by using a statement such as "I lost The Game" or by alternative means).
Some players allow a grace period of 30 seconds to half an hour after someone has lost, during which a player cannot lose The Game again, or is not obliged to announce a loss. This is done in order to prevent a perpetual loss of the game. Under a literal interpretation, one has to announce every loss of the game. However, announcing the game amounts to thinking about it, which constitutes a loss and another announcement. Such a chain continues indefinitely. The common rules do not contain a win condition, nor do they define a point at which The Game ends. However, one reported variation states that The Game ends when the British Prime Minister announces "The Game is up" on television. Additionally, the webcomic xkcd ran a strip which declared that readers had won The Game; however, given that there is no generally agreed upon win condition, it can be argued that the strip caused all who read it to lose The Game.