Something or someone that is worthy of causing a "headache," which can refer both to a physical pain in the head and to something that causes great difficulty and worry
"Did you see what she did today? Ugh, it's so annoying. She is so headacheable"
"She is so headacheable, she kept burping into the mic"
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".