The term Michigan Man hasn’t been this hot since Bo dropped his epic blast at outgoing coach Bill Frieder.  We know the use of the term goes way back, certainly before Bo used it so famously.   Heck, we know that Bo dropped this on Mark Messner during a last-ditch recruiting trip in the mid-1980s: Bo walks over, just hands me a tape and says [Messner in perfect Bo voice]: “You’re a Michigan man and you belong at Michigan.”  And got back in the car. I don’t know if there will ever be a true “source” of Michigan Man because as I understand it, it’s piggybacking on the concept of the ‘Harvard Man’, which I believe was simply extracted from England and the ‘Oxford Man’ or ‘Cambridge Man’, for instance.   The Great Gatsby, chapter 7: “And you found he was an Oxford man,” said Jordan helpfully.“An Oxford man!” He was incredulous. “Like hell he is! He wears a pink suit.”“Nevertheless he’s an Oxford man.”“Oxford, New Mexico,” snorted Tom contemptuously, “or something like that.” Anyway, I did a quick search to find the phrase and nabbed a century-plus old source of it being used in the context of a U-M grad in a coaching position.  Vanderbilt was coached by a former M player, assistant and Yost’s brother-in-law Dan McGugin.   Frank “Shorty” Longman…