Zelda: Girls, would you pick up all the papers you've written on and throw them away? Tomorrow is Garbage Day.
Emma (scurrying excitedly to comply): How do we celebrate Garbage Day?
Zelda (laughing): Well, we pick up all the trash and we throw it out.
Emma: Then do we get cake?
Zelda: Sure, why not.
Gwennie (lolling indolently on the ground amidst all manner of clutter): Mooo-ooom, there's no such thing as Garbage Day. You're just saying that so we'll clean up.