Bob Garfield and Mike Vuolo discuss a mystery word or phrase with lexicographer Ben Zimmer. Lexicon Valley is sponsored by OPEN ACCOUNT, a podcast series created by SuChin Pak and Umpqua Bank. OPEN ACCOUNT explores, through honest and sometimes comical interviews, our uncomfortable silence around money. OPEN ACCOUNT  is available now on iTunes. 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