Here are some possible interpretations based on the word "mad" and "bread":
* "Mad" meaning "very" or "extremely": This would make "mad-bread" mean "extremely delicious bread," similar to phrases like "wicked good" or "crazy good."
* "Mad" meaning "crazy" or "unhinged": This could refer to bread that is unusual or bizarre, perhaps with odd ingredients or a strange shape.
* "Bread" as slang for "money": This would make "mad-bread" mean "a lot of money" or "wealth."
Without further context, it's difficult to say definitively what "mad-bread" means.
To help me understand what you mean, please provide me with more information, such as:
* Where did you hear this phrase?
* What was the context?
* What did the speaker seem to be implying?
With more details, I can better understand the meaning of "mad-bread."