WWII was a rich source of new words for the English language. Before the 1940s, you couldn't tell an eager beaver to shut his pie hole while you were being debriefed by the head honcho. And you'll be amazed by the origin of the word "Jeep." And in honor of NaNoWriMo—because you have to name so many things in fiction—we talked about the most common ways places get their names.