OK

It is said to be the most frequently spoken (or typed) word on the planet, more common than an infant''s first word ma or the ever-present beverage Coke. It was even the first word spoken on the moon. It is "OK"--the most ubiquitous and invisible of American expressions, one used countless times every day. Yet few of us know the hidden history of OK--how it was coined, what it stood for, and the a...