When you go for a traditional two handed high-five and once the opposite party's hands are high in the air, you punch 'em right in the zipper.
Coined by Johnny Knoxville on Conan.
"Don't go trusting ol' Jim over there, he'll trick you into a double high-five."
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".