Another blond joke

It's a hot,humid day as a man sits in his easy chair dreading the fact that he has to paint his porch. There's a knock at the door and he opens it to find a young blond asking if there are any odd jobs she might do to earn some extra money. The man asks how much she would charge to paint his porch and she says $50. He is elated to get this dreaded job done so cheaply. He tells her she will find paint, brushes and anything she needs in the garage and to let him know when she is finished. He returns to his easy chair and iced tea and a very short time later the blond knocks and tells him she is finished. She says she even had enough paint for two coats. He can hardly believe she is finished so soon. He is overjoyed and pays her the $50. As she walks away ,she turns and says "By the way, that's not a Porch you own, it's a Cadillac".