In this episode of Wow, I Never Knew That, it's the revolutionary container that keeps your liquids ice cold and your coffee steaming hot. Learn the secrets behind THERMOS' amazing technology!. And they were the sweet candy pellets we loved as a kid, but did you know that PEZ was created to help people stop smoking? And how did the father of American literature get his name? Find out how a steamboat inspired SAMUEL LANGHORNE CLEMENS to change his name to MARK TWAIN. Plus, where did the term OK come from? And how cellular phones VIBRATE when set to mute, the answer is quite revolutionary.