Because he realized that grime doesn't pay.
Mortgage freeman.
A crackhead buys crack so he can put it into his pipe and burn it. A John pays so that he can put his pipe into a crack that might burn him.
Sweepstakes.
A urinal cake.
Nothing because ghosts don't exist. Edit:Holy crap I just realized I didn't post this on /r/antijokes.
A real mess on your hands.
early retirement