@Gwen Eclipse

granted but now it poops on you at night

I wish I was the smartest kid in class

Granted, but the teacher hates you.

I wish that pet rocks liked being pet.

Granted! But now you can't touch them and they don't get to be pet.

I wish I wasn't lonely.

Granted! But you have so many friends you never have any time to yourself.

I wish I could speak every language

Granted, but you lose the ability to read any language!

I wish to become a centaur

Granted, but your stuck as a baby one forever (are they called Foals too? Part horse so i guess)
I wish I was a cat

Granted, but dogs are always around you.

I wish to go to space.

Granted, but with the Zambian Space Program look that up

I wish I could think of something to wish for.

granted but it's something you really want and you never ever get it

I wish I could keep up with replies.

Granted, but you'll never have replies to keep up with.

I wish to dig to the center of the earth