You must come up with a difficult quest and the next player comes up with a crappy (but funny) reward.
Example:
PriceisWrongBobby Post: Steal from the White House
Jane123 Post: Reward: A free ride in a police car.
UnoHUU Post: Quest: Kill the Lich King with just a shortsword
Killinginthename Post: Reward: A dance with Death.
And so on.
I'll Start.
Quest: Defeat Sephiroth at level 40 with the Kingdom Key