Aeo meaning "Hello" often followed with "Bouyo".
Comes from the
words "Hey, yo" which eventually evolved into
the one word, "Aeo".
By dropping the H, and putting the Y's together, it looked like 'eyo' which was pronounced "Ay Oh" and was simply spelled the new way, A E O.
Bouyo isn't ment to mean
anything other then to represent the person being spoken to.