Calvin and Hobbes by Bill Watterson for January 31, 1988
Calvin as Spaceman Spiff: Planet Bog - pools of toxic chemicals bubble under a choking atmosphere of poisonous gases. But aside from that, it's not much like earth. We find Spaaceman Spiff struggling across the terrain of a distant planet! Suddenly the ground begins to shake! A cloud of dust appears on the horizon! It's a Zorg!! Our hero runs for cover, but the Zorg is instantly upon him! Spiff fires his blaster but the weapon is useless against the monster! The fearless space explorer is taken to the Zorg's cave, where he discovers a vat of boiling water! Oh no! Our hero is about to be cooked alive! Spiff's mind races furiously... Mom: Well? Get in. Calvin: Don't you want to lean way, way over and test how hot the water is?