Make a wish and have it horribly corrupted!

[supasora]

Granted, but you kill your granpa and wake up naked.

[fruckert]

*slaps*

I wish that I didn't just find true love.

[Silver Incubus]

Granted. You now hate her and can only think of killing her.

I wish I had a totally attractive female human sex slave for only me!

[_JeT_]

Granted, but she gives you genital herpes.

I wish that I wished.

[Fisherson]

Granted, but Onimous Prime travels back in time and take it away from you after you wished.

I wish I knew the Ultimate Question of Life, The Universe and Everything.

[MissingName]

Granted.  The truth makes your head explode.

I wish for a nice cup of coffee.

[meyvn MaRa]

Granted, you will get your cup of coffee. But this crazy guy poisoned it.

I wish I'd get a good and nice girlfriend.

[Red Giant]

Granted. But she's your biological sister.

I wish I could fly.

[Hirochi-Zangus]

Granted, here's a plane ticket... There are terrorists on the plane too!
I wish I could eat a planet!

[Angel Walter]

Granted but you get terrible indigestion! (DUN-dun-daaaaaah)
I wish I could write music.

[fruckert]

Granted, but all you can write is Jonas Brothers/Miley Cyrus clones.

I wish the next person couldn't use vowels (not in any way recycling old wishes).

[MissingName]

K.

wsh 4 3.14159265358979323846264338327950288…

[Legacy of Elecrusher]

(wsh 4 appl, that's a vowel D:)

Granted, world explodes.

I wish for *generic wish*

[fruckert]

Granted, somehow your generic wish becomes Charles Mansons sex fantasy.
And it happens to you.
Eww...

I wish that Fox never canceled Firefly.

[Red Giant]

Granted, it goes on for 90 serieses and everyone hates it now. Its so bad that it's previous greatness is completely overshadowed by it's current crippling craposity. Theres also a laugh track.

I wish I could control time.