but seriously when did we all start saying “yo”
Actually, if you really want to know, “Io” (pronounced “yo”) was a Latin … exclamation that sort of meant “Oh” or “Hey”. The common greeting for the holiday of Saturnalia was “Io Saturnalia!”
So we started saying “yo” about 2500 years ago, give or take a few hundred years.
yooooooo
Further back, we get the Greek ‘ἰώ’, an exclamation used in dramatic poetry.