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 interjection 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, a wacky puzzle about Greek names, and more. 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/. Email words@waywordradio.org. Twitter @wayword. Our listener phone line 1 (877) 929-9673 is toll-free in the United States and Canada. Elsewhere in the world, call +1 (619) 800-4443; charges may apply. From anywhere, text/SMS +1 (619) 567-9673. Copyright Wayword, Inc., a 501(c)(3) corporation. Learn more about your ad choices. Visit megaphone.fm/adchoices