Corrupt a wish

[SolarStorm]

Granted, but it ends up being a volcano of nachos, causing the town to become flooded with cheese.

I wish for writing skills.

[Proudy Hooves]

Granted, but you write the worst poetry ever.
I wish for a nice pizza

[ImtheDoctor]

Granted but it gets eaten.

I wish for a pet.

[Proudy Hooves]

Granted, but your pet is so weird-looking...
I wish for a nice phone

[Howitzer]

Granted, but it shatters as soon as it falls out of your hand.
I wish for to see Journey in concert!

[ImtheDoctor]

Granted, but it rains.

I wish I for a tree that grows money

[Proudy Hooves]

Granted, but you get not your country's money.
I wish for a rollercoast.

[SolarStorm]

Granted, but it breaks down instantly due to the lack of maintenance.

I wish for a dress made by Rarity

[Proudy Hooves]

Granted, but that dress doesn't fit you.
I wish for a nice cake.

[sotomolo]

Granted. Your cake is unrivaled in niceness, but its ingredients were spoiled.

I wish I was made of steel.

[NebulaMist]

Granted,but your stuck in a uncomfortable position and cannot move.

I wish for a jetpack ! 

[Proudy Hooves]

Granted, but your jetpack explodes and you fly in very random way and crash somewhere far far away from here.
I wish for a tank!

[MagmaKnight]

Granted, but it's a tank from Left For Dead that will throw cars at you and try to kill you.

I wish I could live forever!

[Proudy Hooves]

Granted, but all of your best friends are ded - they didn't outlived you.
I wish for a big bottle of water :>

[NebulaMist]

Granted but the water transfered to your stomache and you are stuck like this.

I wish that I can go to the moon and come back down to Equestria after

[SolarStorm]

Granted, but Celestia banished you to the moon, You go to Equestria a thousand years later.

I wish for a giant cake! 

[sotomolo]

Granted, but it's covered in ants.

I wish for a bacon hat.

[NebulaMist]

Granted,but it's not cook.

I wish for a laser sword

[Proudy Hooves]

Granted, now you're blind and stuff.
I wish for a Nerf gun!

[ImtheDoctor]

Granted but it's a nerf gun that's been stolen from a store so you get hunted down for it.

I wish for a doughnut