This is a doric phrase that comes from people who keep racing pigeons. The phrase means "Hows your pigeons?" the normal reply would be "Aye peckin aye peckin" which means "Always pecking, always pecking".
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".