I'm Uncle Marty, this is The 3D RadioActivity #288, and on this episode we are playing songs which will show that You Still Don't Know Jack, the name that is unique in the English language for its frequency of use as a verb and a noun for many common objects and actions, The Encyclopædia Britannica article on the history of the word "jack" linked it directly to the common … [Read more...] about You Still Don’t Know Jack