Calvin and Hobbes by Bill Watterson for December 06, 1988
Calvin: I don't understand how Santa runs his operation. How can he afford to give toys away? How does he pay for the raw materials he uses to make the toys? How does he pay his elves? There's no income to cover his costs. How does he do it? Hobbes: Dificit spending. I guess. Calvin: Sure, but sooner or later it's going to catch up to him, and then where will I be?!