Quite frankly, how many people believe that any random student (and back in SU Law School, there was no tag of "Senator" attached to his name), would leave any impression--much less a "charming" one--upon their professors? Even in law school classes, which are presumably smaller than regular undergrad classes, there must be hundreds and thousands of students who passed through those hallowed doors.
Just where are these professors, and what about Joe did they find so "charming?"