The 50 yard line defines the haircut of an aging man of color going bald, to hide the male pattern baldness one shaves the hair off the front half of the head, as the halfway point of a football field is the "50 yard line" see Sherman Hemsley.
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".