It's when you are too hungry to get up and find food. Only gets worse till you crawl to the kitchen and gobble down several cans of mountain dew as you lick splenda sugar.
This is what you say when you're really hungry and have no food in your house because you used all of your money to buy alcohol. This usually occurs after the alcohol has worn off.
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".