Epanalepsis -- or Reasoning with a 4-Year-Old.

THE BOY: I want to be a grownup because grownups can do whatever they want.

ME: You're right—I could go buy ten Snickers bars and eat them all right now. Or go watch the same movie seven times in a row. But I don't want to. The thing about being a grownup is that you don't want to do all the crazy stuff you used to daydream about when you were a kid.

THE BOY: Yeah but grownups can do whatever they want.

From Your Monkey Called