Jonathan:"There's usually one morning of a conference where I'm just too tired to go in."

Elizabeth: "Wait, there's only one day left of this conference and the talks are on galaxies!"

Jonathan: "Well... there's always the bus."

Elizabeth: "I could just take your car."

Jonathan: "You don't have the keys."

Elizabeth: "You'll be unconscious. I'll steal the keys."

Jonathan: "I'm hiding the keys."