Do you know the REAL origin of the word 'OK?'

You’ve said it a million times in your life. It means so many different things, from “yes” to “great” to “not so great.” People even say it in almost every language. But why even do we say “OK?” Or is it really “okay?” And what does it all have to do with President Martin Van Buren? Find out the answers to those questions and many more in this fascinating video