Simple. Someone makes a wish and you have to forget it up somehow.
lets get this stuff going
EDIT: Forgot my wish. I wish for Fallout 4 to download faster.
Example:
a) I wish for a car.
b) Granted, but the car is stuff.
a) I wish to be the totalitarian ruler of the world.
b) Granted, but then crime rates rise and you are assassinated.