1.) A reference to Mexican sweet bread that is bought at mom and pop grocery stores, bakeries, and or HEB's in south Texas.
2.) A slang for pussy used in the derrogatory manner, much like the slang "joto", "maricon", translated to english meaning queer or faggot.
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".