Water and The Brain: Is The Brain a snob? That seems to be the only explanation for why he won't go to Waterworld with the rest of his friends. But Arthur concludes that theory is all wet as he tries to discover what's really bugging the Brain. Arthur The Unfunny: Arthur's a notorious joke-killer. But when he's scheduled to perform as a carnival clown, Arthur decides he'll learn how to make people laugh--or else!