This game is played by creating a parallel universe with one difference to this one. The next poster will then state the result due to the difference, and make his/her own universe.
Example:
User 1: There is a parallel universe where people greet each other by smashing their knees together.
User 2: As a result, humans are no longer able to walk. There is a parallel universe where men have breasts.
There is a parallel universe where the sky is bright red.
@etg2002 (are you sure it can't be parallel universe? Scientific American calls it parallel universe [url=http://www.scientificamerican.com/article/parallel-universes/]
As a result no one knows him.
There is a parallel universe where there's is no speed limit.
As a result, there is one less state, making a group of people, gone insane at the notion of only 49 states, riot against the government and destroy America.
There is a parallel universe where lizards rule the world.
Granted, it comes with a 99.9% mortality rate, and anyone that still wish to do so have to sign a no obligation contract, and update their will.
I wish all mosquito suddenly loses their ability to bite human being, since killing all of them will probably have some sort of huge impact on the current ecosystem blah blah blah...