When someone goes on vacation and asks you to check in on their house while they're away. Ex: water plants, feed pets, shovel the driveway.
"We're going away for a week. Can you do a Canadian break and enter and feed our dog?". It's based on the stereotype that Canadians are so polite that when the break into a house they do nice things for the owner instead of stealing items.
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".