Amid court-ordered busing in the 1970s, a middle-school teacher tried to distract her nervous students on the first day of class with this strange assignment: find a monarch caterpillar. The result? A memorable lesson in the miracle of metamorphosis. Plus, the story behind the slang expression Word!, meaning "Believe me!" The original version involved the idea that a person's word was their bond. And the expression Empty wagons make the most noise suggests that the person who boasts the loudest may actually be the least knowledgeable. It's a phrase that's had many versions over the centuries -- including one that goes all the way back to ancient Rome! All that, and nebby, beat-feeting, red-headed stepchild, corotole, undermine, fankle, and a wacky puzzle about Greek names. Read full show notes, hear hundreds of free episodes, send your thoughts and questions, and learn more on the A Way with Words website: https://waywordradio.org/contact. Be a part of the show: call 1 (877) 929-9673 toll-free in the United States and Canada; worldwide, call or text/SMS +1 (619) 800-4443. Email words@waywordradio.org. Twitter @wayword. Copyright Wayword, Inc., a 501(c)(3) corporation.