you get one, but it rusts.

I wish I could somehow warn the next person that they will die within the next 100 years.

You do, but that doesn't stop them from dying... (trolololol)

I wish I had the fastest computer in the world that never breaks.

I only answer the wish above

I wish I could could get anything I wanted in the world, whenever i wanted, free of charge.

Granted. The world is a desolate wasteland, as you are the last human on Earth.

I wish that I had the ability to control gravity.

You accidentally flip the world upside-down.

I wish I was altheletically fit.

You start running and break your leg

I wish I had telekinesis

Granted. So the government comes and tries to capture you for study. You escape to near the borders,but there you are shot by a sniper while distracted by the sounds of a police siren.

I wish for a rock.

a bunch of rocks spontaneously start flying in your direction and you get hit by one in the face.

I wish I could heal from my injury.

Sent from my iPhone.

Granted. You heal. I kill.

I wish that i had a better life. (....  lol, jk i have a good one :)