Corrupt a Wish

Granted, the effects only work on Mars.  I wish for 10k in 100 dollar bills!

Granted, but it's in a currency that you can't use.

I wish I was a fox!

Granted after a few years you are eventually caught and made into a coat.

I wish for a gobstopper that never loses its flavor and lasted my whole life.

Granted. Using it desensitizes your taste buds, and you can no longer taste anything.

I wish i could taste the rainbow.

Granted, unfortunately, it turns out rainbow tastes bad.

I wish I could go to the end of the rainbow.

Granted. You reach the end of the rainbow, and meet a bunch of leprechauns. You're charged a fee for reaching the end, and your valuables are taken to fill the money pot. Unfortunately it's not enough, and you're stuck there forever.

I wish everything was coloured like a rainbow.

Granted. You get a seizure that never ends.

I wish I was a butterfly

Granted, you lose control of your wings and you fly into a volcano erupting.  I wish for 10k in 100 dollar bills in an american money.

Granted. It's all counterfeit and you get arrested for having and using counterfeit bills.

I wish i got paid to corrupt wishes.

Granted, but this thread gets locked and there are no more wishes to corrupt.

I wish I had a large pot of gold.

Granted, but everyone else gets a large pot of gold too so it is now worthless.  I wish there was life on other planets and they were nice and we travelled to meet them.

Granted. They're nice and friendly, but we pick up an incurable alien disease, and our population is wiped out.

I wish we could cure all diseases.

Granted, but the resources used to create a supercure destroys the Earth and everyone dies.

I wish Sunshiny is a shining sun.

Granted. Unfortunately i happen to be on Earth when i transform. The Earth disintergrates.

I wish i had good luck.

(Edited to fix my wish.)

Granted... but that sucks up everyone elses good luck giving it all to you..leaving only bad luck... everywhere... and again... earth blows up.

I wish I had a NEW mountain bike. 

Wish granted. But you were so excited to ride it that you forgot to wear your helmet, and you crash and get a concussion.

I wish I was a doctor who can cure concussions.

Granted... but upon receiving your award in medicine... you trip and fall and break your femur at the distal end.... and get a concussion.

I wish i could spend a whole summer at the beach.

That'd be a horrible and ironic fate for a doctor.

Granted, but sharks take three of your limbs while you swim and you barely make it alive.

I wish I could time-travel.

Granted, but you die in the future to aliens. 

I wish that the weather was always warm.