I might not go quite so far as to vote to "impotato" (or rather, "impotatoe") Dan Quayle, but I would definitely require him to attend grade school again to brush up on his "lspignel klissl"!
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".