Either to be completely paralyzed and yet still able to feel pain...kind of like being catatonic. To just lie there helpless, being unable to do anything while watching days pass by.
That or have their existence completely erased so their deeds, actions and everything and gone from history, myself included.
The other one I'd wish upon a life of complete sorrow, where nothing goes their way and happiness never finds them.
I'm just a little bitter. Plus you said anything goes >.> <.<