Calvin and Hobbes by Bill Watterson for January 19, 1987
Calvin: Hey, Hobbes, you got a letter. Hobbes: A letter? For me? Wow. I never get letters! What fun! A letter for me! I wonder who sent it? I wonder what it says? What could this possibly be? Calvin: Open it and find out, you lunatic! Hobbes: Don't get huffy. I want to savor this.