I'm homeless.
I used to be a billionaire and had a collection of over 700 exotics. However, I owned an Investment Bank, and some rogue trader went crazy and bankrupted my Firm and I ended up on the streets.
Fortunately I have a super hot secretary who I repurposed as a call girl, and I was able to pimp her out for $30, then went to the local casino on the Indian Reservation, and while gambling the $30, I won $500.
I then went to a gun shop and traded the $500 for a gun. Then I happened to be walking down the street, when some former trader from my bankrupt bank is driving by in a brand new 550i. I couldn't let that stand, so I pulled the gun, stopped the car. Pulled the bastard out, killed him, and took the car.
Then I heard some other bastard is getting an M5 next week, so I'm planning to jack him too.
Gross Income = I eat what I kill.