This strip was originally published in the newspapers on December 11, 1986.
Calvin has a great idea for school. He takes a ping-pong ball and cuts it in half. He draws a dot on each end. He puts one over each eye so it looks like he's paying attention. He asks Hobbes if he makes him look too interested. Hobbes says no, because Calvin is looking in the wrong direction.
This strip was also published in the following books: