Bob Garfield and Mike Vuolo discuss a mystery word or phrase with lexicographer Ben Zimmer. Lexicon Valley is sponsored by the Great Courses, offering engaging audio and video lectures taught by top professors. Courses like "The Secret Life of Words: English Words and Their Origins." Right now, get up to 80 percent off the original price when you visit thegreatcourses.com/lexicon. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at www.slate.com/podcastsplus. Twitter: @lexiconvalley Facebook: facebook.com/LexiconValley Email: lexiconvalley@slate.comLearn more about your ad choices. Visit megaphone.fm/adchoices