A worm sucking doo doo head is just an example of a poorinsult often used by preachers to show that insults hurt just as badly as being hit by a baseball bat. It's a nonoffensive insult.
Did you hear Pastor Mark call Stephanie a worm sucking doo doo head during the sermon today??
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".