Someone who is addicted to nicotine and always fiends off of your vape or whoever's they can get their hands on. Often uses a sketchy modified wire (fiend wire, tweaker wire) to re-charge their disposable vapes instead of getting new ones.
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".