A guy knocks on the front door of a large house in a nice neighborhood, looking for odd jobs. The butler answers and says "may I help you?".
The guy explains that he's trying to make enough money to pay the rent this month and asks if there is any work to be done around the house, mow grass, trim hedges, etc.
The butler says 'Why yes, as a matter of fact, the owner just asked me to find someone to paint the porch.' He goes on to explain that the paint, brushes, scraper and everything he needs is already back there, and that the guy can start immediately. The guy, elated, heads around back to get started.
After a few hours he rings the bell, and the butler answers the door again.
The guy says: "Man, the paint on that porch looked great already, but I scraped it off anyway, and painted the new color. I was careful to not miss a spot!"
The butler hands the guy $100, and thanks him for his work.
As he's walking away, the guy turns to the butler and says:
...wait for it...
"...oh, and by the way, that's not a porch, it's a ferrari."