To get Steve Irwined is to be killed or greivously injured doing something you love in a really ironic way. Comes from the one time that Steve Irwin was killed by a manta ray while filming an underwater video.
Dude, did you hear about that stunt pilot? He was totally irwined! He was performing a Reverse-700-Pinwheel-Corkscrew when he flew into a migrating flock of Canadian Geese and exploded! What a way to go, eh?
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".