Calvin and Hobbes by Bill Watterson for May 13, 1986
CalviN: In his minuscule size, it takes Calvin, the human insect, ten minutes to walk across a book's page! A the other end, he slowly lifts the gigantic sheet! Then it's another ten minute journey back as he turns it over! Dad: Gee, the kid's been quiet for almost twenty minutes. Mom: He's doing his homework.