Calvin and Hobbes by Bill Watterson for July 21, 1986
Mom: C'mon, Calvin! I signed you up for swimming lessons. Calvin: I don't want swimming lessons!! Mom: Too late. Let's go. Calvin: What about Hobbes? Did you sign him up too? Mom: No. It's not good to get tigers wet. Calvin: Why is that? Hobbes: It takes us all day to dry, and until we do, we smell funny.