An old person between the age of 50 and 75 who doesn't realize what impact their grumpy mood has on the people around them.
For example the scene from A Million Ways to Die in The West, featuring the main characters father sitting in a rocking chair. The father is a Needle Shits Old Fart!
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".