He was an "adjunct professor" = a non-tenure-track resume-enhancer for local lawyers to 'give back' to their alma mater. It's also a way for the law school to keep in touch with local law firms or (in Obama's case) do a favor for some influential local politician.
I was an "adjunct professor" for years at my law school, but I was never under any illusions as to the importance of it or that it meant that I was a particularly learned person or great lawyer. I was helping out my school and getting something nice and public-spirited to put on my resume, nothing more.
There you go. That's the root of the "Constitutional Law Professor Obama" lie. Thanks for having the patience to post the facts yet again.
Much appreciated.
As rather succinctly demonstrated by the patently obvious nonsense he's scribbling on the chalkboard...