Ice Queen: I'm very hungry.
Mom: I know but I didn't go food shopping.
Ice Queen: Can we order something?
Mom: Not until your sister leaves.
Ice Queen: Why?
Mom: Because she'll start a fight and tell me that I don't have money to spend on ordering food.
Ice Queen: Well when is she leaving?
Mom: In a half hour...her boyfriend's taking her to the movies.
Ice Queen: I don't know if I can wait that long...I'm so hungry.
Mom: Go into your room, wait ten minutes, and then order the food. That way it will be here right after she leaves.
Ice Queen: Genius!