Calvin and Hobbes by Bill Watterson for June 08, 1986
Calvin as Spaceman Spiff: No earthling has ever before seen the cratered, scarred surface of distant planet Zog! Although its not unlike some of those zit cream commericals..We join the fearless Spaceman Spiff, interplanetary expolorer extraordinaire, out at the farthest reaches of the galaxy..with nerves of steel, our hero sets forth on his dangerous mission! He fires his hyper-jets and....blasts into the fifth dimension!! Into a world beyond human comprehension! Into a world where time has no meaning! Calvin: Man, this class lasts forever! Teacher: So we carry the three into the tens column.