Ok the rules are...: NO RULES! wiehhhh lol. Well.. maybe some, but ok anyways the only thing you'll have to do, is to look at the above person (what he or she had written) and let it make sence a bit lol ^^;;.
But it's ok if you'd like to let something happen like, for example: "OH MY GOD IT'S RAINING SAUSAGES!" or something like that... Release your fantasy ^_^!
If there's anything you don't understand let me know ^^, i'll try to explain XD.
Goodluck!
oh right .. well i'll start the story XD. Here we go ^_^...
Once upon a time, there was a hero named Mr. bunny pants! He was called like that because he always weared pants with a bunny tail... His enquipment was a carrot.. Anyways he went into the forest and ...
(now the next person has to think of how the story will go further) ^^.
*edit*
One other thing, you don't have to read the whole story again to know what the story is about. In fact the only thing you have to do, is actually reading the post of the person above you, and think of a fitting short story or sentence to add to it ^^.