Ok, here is how it works:
Basically someone makes a wish, you corrupt it, and then make a wish of your own.
Example:
Poster 1:
<I wish I could fly
Poster 2:
^Granted, but then you accidently fall asleep at 100 feet and die when you reach the ground.
<I wish I had some chocolate.
Poster 3:
^Granted, but it's poisoned and you die.
<I wish...
Etc., etc., and etc. This one's
fun...
I'll start:
<I wish I had more motivation to write.