The person above you makes a wish. You grant it, but have to put in a bad side to the wish, then you make a wish.

Example:
Lee: I wish for 10000 cheeseburgers.

Sam: Granted, but all the cheeseburgers give you several heart attacks at once. I wish for a unicorn

Jorge: Granted, but the unicorn lost it's horn in an accident and looks like a really small horse. I wish for 1000000 dollars!



You get the Idea!

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I wish for a giant Maple Bar Doughnut! :D