You must understand the rules so you can get round them ...

I met a fairy today who granted me one wish. “I want to live forever,” I told her. “Sorry,” says the fairy, “I’m not allowed to grant wishes like that, so try something else.“

“Fine,” I said, “I don’t want to die until Australia has a credible policy to take on climate change.“
Said the fairy: “You’re a shifty little bastard, aren’t you?”