Don't we all? (this wish has already been wished by me.)

I wish my legs weren't so sore and no, DO NOT AMPUTATE THEM.

however now your legs are blazing (heh. better sore than burnt to ash, right?)

i wish for a dDDDDDrrUm

you got a  dDDDDDrrUm which translated in english from minoxian is a human eating plant.

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i wish to gain infinite knowledge.and for my brain to be able to handle it and it should be permanent.

you have a constant headache, but you're still really smart.

I wish to be a great music artist.

you become so good that people start to rebel against your amazing music.

i wish that i was super athletic (without using drugs)

when running, you slip up and hurts your head badly.

i wish i have a dart made from wood

Granted. I used your back to play darts with someone.

I wish for some bromine samples.

the bromine samples are exactly same; you ask again, again and again until your city is flooded by bromine samples.

i wish i have a jelly

...fish. You died of electrocution.

I wish I have a block of blunt ice.

All the humidity around you is frozen with you inside. I then shape it into a block.

I wish caffeine didn't have negative effects.