Fretwork Teacher
One of Rincewind's surfeit of academic titles.
Another relatively easy academic title to have, requiring, at present, remarkably little actual work. This position resulted from an ancient curse by a dying wizard that sounded very much like "May you always teach fretwork!".
However, it is interesting that the failed wizard Brian, in A Hat Full of Sky, confesses to Tiffany Aching that he actually did study fretwork at Unseen University. Is there a story yet to be told here?