I must admit that I am shocked...shocked!...to learn that the origin of the phrase "It ain't over 'till it's over" was in 1973!
While I knew this was a Yogi-ism, I thought that it was from his playing days and would have pre-dated my life by decades rather than a phrase from my youth.
Other than that, there was not much else that surprised me though I have learned some more of the history of this situation from another perspective.