Alright, first poster posts a fortunate thing that happened. But the poster after that posts an unfortunate thing that happened, ruining the fortunate thing. Then the next poster posts a fortunate thing, fixing the unfortunate thing.
Example:
Poster 1: Joe won free cheesecake.
Poster 2: The cheesecake was poisoned.
Poster 3: Someone stopped Joe from eating the cheesecake before he ate it.
Poster 4: The person who saved Joe was a serial killer who was trying to get on Joe's good side so he could kill him.
And so on...
I'll start.
Jim won a game of Monopoly.
PS: Please say Unfortunately/Fortunately before you post based on what turn it is. Because it gets kinda confusing.
He got beat up by bullies for bragging about it.