Calvin and Hobbes by Bill Watterson for August 23, 1989
Hobbes: What are you doing? Calvin: I'm practicing my sneers. Calvin: There's nothing like a good sneer to dry up conversation. How's mine look? Hobbes: Awful! Calvin: Thanks. With this sneer, I hope to be an unbearable burden at any social occasion. Hobbes: That will give you a real head start on being a teenager. Calvin: I know! It's like getting seven extra years!