Someone who is self-loathing and self-depreciating to the point of extreme hilarity. Usually very lonely despite having many friends, the butt of all jokes and at constant risk of being fired from his many dead-end jobs.
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".