noun. Not curable by mouthwash. May be alleviated by lobotomy or hockey stick.
Real citation: "He said “good morning” to me in that incredibly annoying whinny wishy-washy voice of his when I entered – GOODJOB DOOFUSBREATH! IT IS 20:00, and I’m saying that instead of 8:00 PM, because the latter is too COMPLICATED for your TINY BRAIN to GRASP!"
(July 21, 2005, http://188.8.131.52/search?q=cache:J2uBLCKhphgJ:www.finderofart.com/details/details.php%3Finfo%3Dcourses%2520art%2520sculpture%2520ct+doofusbreath&hl=en)
Made-up citation: "After painfully slogging through grad school, I have earned the esteemed title of 'Dr. Doofusbreath.'"