Calvin and Hobbes by Bill Watterson for May 14, 1991
Dad: "CALVIN! What's all this noise?! You're supposed to be asleep!" Calvin: "Monsters under the bed, dad! I was whacking one with my baseball bat!" Dad: "Goodness, Calvin, it's just your stuffed tiger! You should put away your toys!" Calvin: "Sorry, ol' buddy. Good thing I missed occasionally, huh?" Hobbes: "Yeah, let me see your bat a minute"