British origin; created in conjunction with the original term 'wanker'. Used to describe someone who masturbates stallions, even within job description of one who collects semen from a stallion.
Other sayings commonly used in the same context are; "Poke in a pig", "screwing the pooch" and "Sticking the fleece"
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".