Person A wishes for Wish A
Person B deforms Wish A into something evil, then makes wish B.
Person A : I wish I didnt fail my driving test yesterday.
Person B : Granted, but you wreck your car horrifically as you pull out of the school, since you forgot to look both ways. You are stripped of your license forever more, declared the local moron, and are hospitalized for five years as they work to paste your face and skin back on because it was burned off in the wreck that you miraculously surived. After spending those five years in extreme pain, You are completely normal except for your nose. When going into the final operation for a new nose, your doctor slips on himself, and sends a knife into your skull, which hits the exact spot to turn you into both a vegetable and a drooling retard. You spend the remainder of your life like a dog on drugs in your mothers home, with a constantly full drool bucket hanging beneath your lopsided tongue.
I wish I was dropped in a volcano by pissed off natives
I shall start.
I wish I had more memory power.