An Italian expression (the use is very common specifically in Rome) that in English means " Your fucking dead relatives". In italian it makes more sense, trust me
A: Sorry! I didn't see you, oh god my yogurt is all on your guccishirt!
B: Li Mortacci tua! You fucking idiot!
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".