The act of masturbation to completion during oddly non-erotic situations, generally ending with sperm on the bottom of a desk or table, or soaking into your pants.
Man, I was really Shafering hard while watching that youtube video about point-of-sale systems. My pants are soaked with cum now.
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".