In the area of making money/a living:
Group I - People who don't need to work for money: Other people work for them. They collect the money.
Group II - People who trade time for money: Work all the time either to earn a lot - though may not be as much as Group I - or just to make ends meet.
Group III - People who work a lot but get no extra remuneration. Either they are already paid a lot, or they are simply carrying too much shit.
mf belongs to Type III and its sub-category of carrying too much shit *.*