Saw this in another forum and I really enjoyed it.
Basically, you make a wish, the next person grants, but corrupts it, and make their own wish.
Example
Post 1: "I wish I had a million dollars"
Post 2: "Granted, but the IRS found out about it and audited you, finding out that you owe $999,999 in taxes, so you really only got to keep a dollar of it.
I wish I had a puppy for a day"
Post 3: "Granted, but the puppy had no bladder control and you had to spend your day cleaning up dog pee.
I wish I had some coffee"
etc....
If you need more examples,
here's the thread I copied this fromI'll start
I wish I had my own personal chef