When you piss off J. Boyd at his Biology lair and he lifts your desk and slams his 5 lb text book on your desk when you fall asleep. You will then proceed to write an essay on what you did wrong and turn it in the next day. Symptoms of Boyd-Rage include the following: passive-aggressive behavior, reddening of the face, & dissolved weiner.
Yo I asked the Bio teach about pro-creating with chimpanzees because of their 97% DNA similarity, he responded seriously. I'm glad he didn't go all Boyd-Rage on me like he did to that other unfortunate student.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".