I wish I had a dragon
Granted, but it imediately eats your family and friends.
I wish I were tall.
Your enormous height ostracizes you from people, if you stand up, your blood rushes down your legs at terminal velocity. After you pass, your skeleton is used as a space elevator.
I wish that my wish doesn't come true.
Granted but your tickets get stolen by a bird who uses them to furnish it's nest.
I wish I could meet Hank and John Green.
Granted. But they're zombies.
I wish it wasn't so hot.
A mile of snow drops from above it's very cold. You've also been squashed.
I wish for the happiness of the next poster.
Granted, but you use your skills to be a criminal mastermind, and the real Holmes brothers use their combined powers to put you in jail.
I wish there was no pollution.
denied, but you got your real desire and broke the universe
i wish to disrupt the status quo
Granted, now the Economies of the world have completely failed and there is a rampant war raging.
I wish for the abilities to help people.
Granted, but you can never help yourself.
I wish the Doctor would land in my backyard.
Granted, But aliens invade.
I wish the next person's wish was uncorrupted.