Anyone who has heard of the song con-science. This also applies to the cave remix.
'What are you listening to?'
'Con-science.'
'Who's it by?'
'Muse.'
'I have all their albums, and I've never heard it. Seriously, you are an obsessive Musefan.'
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".