Ask HN: What is your definition of Rich?

There are many philosophical debates about what people should or can afford in taxes or charity. People will brag they are rich when trying to impress others. People will cry poor when its tax time or when people are handing out freebies. If there was one thing I learned from Philosophy 101 – define your terms. So how do you define the 3 primary categories: Rich, Middle Class, Poor? Bonus points for doing the subcategories of upper and lower.