On Bizarro world, it's the adults who wear masks and play pranks on Halloween. But when Bizarro No. 1 plays cruel tricks on him, Bizarro Krypto searches for a better companion.; Aliens from Xnor come to visit Earth as tourists and are very annoying until Superboy can figure out a way to get them to leave.; Tricksy wears a safety belt, even when in the bathtub.; A student falls asleep during the professor's two-hour lecture. He asks another student to wake him, but the response is "You do it professor. You put him to sleep!"; Man wearing many hats makes great target