Calvin and Hobbes by Bill Watterson for October 02, 1995
Calvin: Boy, I hate school assignments! Miss Wormwood is out to destroy my life! Hobbes: What do you have to do? Calvin: Make a leaf collection! What a dumb waste of time! Hobbes: How many leaves do you need? Calvin: 50! I gotta collect 50 leaves! And just when I thought of a loophole, the teacher said every leaf has to be a different kind. Hobbes: She's got your number.