Calvin and Hobbes by Bill Watterson for February 07, 1993
Calvin as stomach microbes: Eeww! What's this?! Ug, who can tell? Keep stirring!!What an awful job! This is the worst! Well somebody's got to do it. Heads up!! Oh no! It's bubbling up! Aiee! Chemical reaction!! Look out! Run! Run! It's gonna blow! Buurrrpp! Dad: Calvin, that's enough! Calvin: I can't help it! My stomach microbes can't handle this awful food.