Calvin and Hobbes by Bill Watterson for December 22, 1987
Calvin: Gosh, Hobbes, what if I don't get any presents this year because I doubted the existence of Santa? Suppose he's putting my name on the "bad" list right now! That would be awful! Personally, I'd think that if you weren't on the "bad" list all along, this wouldn't push you over. Calvin: Thanks for the comfort eggnog brain. Hobbes: See? See why you're on the "bad" list? Insults!