I saw this on the GameFaqs Forum, and decided to test it out.

The rules are simple:
Someone posts a wish, and the next poster has to corrupt it in the most horrible manner possible, and then post a wish of their own.

For example:
Person A-I wish for a sword.
Person B-The sword has a mind of its own, and turns on you, beheading you.
I wish for a faithful servant.
Person C-The servant is so useless he's a liability, forcing you to do two men's work.
I wish for eternal life.

And so on so forth.

Oh, and be as horrible as you like! No limitations(except for the character limit), and no one take the corruption of your wishes too seriously. Bonus points for being able to link the wishes together!

And finally, an origin story is out! Credits to DJ Wiz:
Once upon a time there was a boy named Terra. He had an account on the Mcleodgaming forums, and he enjoyed posting there.
One day he decided to create a new topic in the "forum games" section. Whether or not this was a good idea remains to be seen, but it was done and that was that.
This topic was entitled "Corrupt a Wish(Check the first page!)" which rumour has was based off the name of Terra's great great grand uncle's second room-mate's 9th cousin's daughter's brother's nephew's 7th cousin 4 times removed's pet fish's 1st owner's son, Koruptaivich Chikdephuztpajj.
See, Koruptaivich has the strange habit of - whenever he heard someone ask or wish for something - to state every bad thing that could happen if that wish came true.
People really didn't like this very much, so they told him that if he did it one more time, they would send him to South Africa in a banana.
Of course, Koruptaivich thought this to be very funny, and wanted to see if it would come true. So he did it twice. Once to his father's fish who he thought he had heard wish for a sandwich to gift him dude (Which was really a mis-heard version of "Koruptaivich give me food". Historians generally agree that Mr. Chikdephuztpajj liked to collect parrot fish)
So Koruptaivich said "If a Sandwich gifts you "Dude", then he'll only be able to give it to you in the next RPG you play, which will be based off of Bill and Ted's excellent adventure."
The fish didn't really understand this, but figured that it wouldn't get him fish food, so his learning AI assumed that it was an incorrect action and never did it again except when set to level one in which case he did it all the time.
The second instance of Koruptaivich corrupting a wish was after his father had wished for something, no fishes involved, parrots or otherwise.
His Dad has said “I wish for that dude to gift me a sandwich.” and Koruptaivich said “That dude gives you a sandwich and you eat it and greatly enjoy it. Too bad you’re poisoned now.”
And his Father became greatly irritated and sent Koruptaivich to South Africa in a banana, where he started a company which later became the largest parrot fish selling business ever seen in the world. Several generations later, the company was being run by Kulophdaifish Chikdephuztpajj, who was the great great great grandson of Koruptaivich’s Father’s parrot fish.
How the fish came to run the company is a mystery, but it’s an unimportant mystery right now.
Kulophdaifish then proceeded to eliminate all the

I'll start.

I wish that I could be different from other mortals.

You're a horrible ugly mutant that everyone hates so they decide to kill you, with a wooden spoon.

I wish I could take out dubstep from this universe.

Taking out dubstep from the universe leads to the death of many of the world's greatest scientists, as they've lost their motivation for work. As a result, we do not have advanced technology today, and we live in caves.

I wish that I could make right what once went wrong.

You return dubstep to the land, but since the scientists died already, your efforts were in vain and then evil scientists emerge and make a horrible world that we are forced to live in.

I wish I could kill someone with the snap of my fingers.

Your fingers become uncontrollable. You keep on snapping and snapping your fingers until no one is left on the earth leaving all species to become extinct.

I wish I was the fastest person in the world.

Unfortunately, though your speed is the fastest of them all by miles, you age as fast as your speed increase. You grow old and die in about a year, though you can run at the speed of sound. What a waste that would be.

I wish that I would be completely invulnerable to all physical danger.

Sadly, you're not invincible to any mental damage.

I wish for nothing.

You are consumed by the nothingness around you.

I wish I was Marth.

As Marth, you cannot control your own actions, as the player fully controls you. A stupid players goes to H5 on Shadow Dragon, and promptly kills you. You are dead.

I wish that all the stupidity in the world was gone.

It all goes from them to you, making you the only stupid person in the world.

I wish I could fly into the heavens.

Your wish prevents you from going to heaven and sends you to the hell for 616 years.
I wish I was dead.

You die, leaving everyone you know sad and depressed. You go to hell for it.

I wish I could play any video game whenever, where ever.

You transform into a walking computer and get called a nerd.

I wish pandas could talk.

The panda's new found talking abilities lead their brains to evolve beyond normal panda capacity. They secretly plot against all human kind for destorying their homes,while their brains develop even further above human understanding. They develop such advance technology that they completely destroy all species in the world except for pandas. Due to lack of resources panda civil war brakes out and baboo becomes scarce for all. The pandas eventually fight until there are no more left.

I wish that I am smarter then all other humans in the world.

You become so intelligent that you hate other human beings and other living things. You teleport to Mars but get intercepted by a solar flare and never heard from again.
No one misses you.
I wish everything in existence......
wasn't.