Getting into the car after a big grocery shopping trip:
S: When am I going to die?
Laura: Uh, why do you ask?
S: Is it when I'm too old to live anymore?
Laura: That's a good way to put it. I want you to live a long and happy life and make the world a better place.
S: I don't want to do that.
(Yeah, shopping puts me in a bad mood, too....)