Smoking so many cigarettes in one day or night that you wake up in the morning and your chest hurts when you breathe, your throat is sore, and you have heartburn that won't disappear.
I partied hard last night and woke up with a hangover and a lungover.
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".