noun. A title you don't even need to go to graduate school to acquire.
Real citation: "Off to Harbour Town for 18...someone please let professor fuckfacehead know, will ya?"
(Schlongy, Oct. 29, 2004, http://www.ubersite.com/m/50029)
Made-up citation: "Don't call me Professor Fuckfacehead again. I prefer Dr. Shitwadbrain."