Calvin and Hobbes by Bill Watterson for January 03, 1991
Hobbes: Yikes! There he is! Calvin: Pack snowballs! Maybe we can knock him out! Yaa! Yaa! Snowman: Unghh! Hobbes: The snowballs just stuck to him! Calvin: Look, it's given him an idea! Hobbes: He's packing more snow onto himself! Calvin: He's making himself bigger! Oh no!