This is a twist on a simple game.
The person above you posts something good then you follow up with a post that will taint their good thing. Then you post a good thing for the next person to ruin.
Example:
The person above me posts, "I won the lottery."
My follow up post is...
Bad thing:
"But in your excitement, you crashed your car on the way to cash in and the lottery ticket burned in the resulting fire."
Have fun with this. Let's see where it goes...
I won the lottery!