porch? poche?

One day, a wanderer happens to reach a neat looking farmhouse. He goes up to the front door and knocks on it. When the farm owner answers, the wanderer asks him, “Please, sir. I haven’t had a good meal in several days. Could you give me something to eat?” The owner says, “I have made a lot of money in my lifetime by supplying goods for people. I’ve never give anything for free. If you go to the back, you will see a gallon of paint and a paintbrush. If you paint my porch at the back of the house, I will give you a good meal.”

 So the wanderer goes the back and a while later he again knocks on the door. The owner says, “Already finish? Ok. Come on in and sit down. Cook will bring your meal right in.” “Thank you, sir” the wanderer says, “But there’s something that I think you should know. It is not a Porche you got there. It is a BMW.”