A lawyer named Patrick Smith infamously invited one of his friends to bring his "old horse fat" over to have a three-way with his girlfriend. The email was forwarded all over.
Smith in email: "Dude, 'Carol' (not her real name) wants some of that double penetration action, so let me know when you and the old horse fat are around."
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".