Your cranky grandma comes along and spanks you for not using correct grammar.
I wish this wish was on page 551, not 552.
Granted. You cause a paradox which ends the universe.
I wish for some liquid helium at absolute zero temperatures.
Granted, it climbs out of the beaker (freezing cold helium actually does that!) and strangles you to death. (freezing cold helium doesn't usually do that, but it does happen.)
I wish for free underpants.
Granted, you die now. Horray! Joke. :)
I wish bandaids wouldn't stick to you so much.
Granted, but when ever you dream your being controlled by a giant booger monster so you can't do what you want anyway.
I wish I could breathe fire like a dragon.
Granted, it explodes.
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I wish i can breathe methane. (and breathe oxygen at the same time)