drop bear
Sr. Grandmaster
I suppose I should update that I just visited a (non-Brazilian) friend's academy to teach a couple of classes and he introduced me as "Professor" each time. At least calling me "Professor Tony" rather than "Professor Dismukes" helped make it clear that I'm not an academic professor.
Our coach got the nickname professor from a ring announcer who just decided that because he was a school teacher it was just better than the one he already had.
He was a nothing belt in BJJ at the time.