Have you ever stopped to wonder where our everyday words actually come from? You might be surprised to learn that dude started as a way to poke fun at men who were too fastidious about their outfits. Or that we owe the word hello to Thomas Edison, who thought it was a much better choice than Alexander Graham Bell’s suggestion, "ahoy" for telephone calls. Even the word OK is the lone survivor of an 1830s game of misspelled phrases. Let's explore the hidden stories behind the words we think we know so well.