"Blonde Painter" joke

Desperate to earn some money, a blonde started to canvass a wealthy neighborhood hoping to find a handy-man type job. She asked the man at the first house whether he had any jobs for her to do.
"I would like my porch painted," he said. "How much would you charge?"
"Fifty dollars," she answered.
The man agreed to the amount and told her the paint, ladders, and anything else she might need, were in the garage.
He went back into the house and his wife, who had heard the conversation, asked, "Fifty bucks? Does she realize the porch goes all the way around the house?"
"She should. She was standing right on it!" he replied.
An hour later, the blonde came to the door to collect her money.
"You're finished already?" asked the man.
"Yes, sir," she said. "I even had some paint left over, so I put on two coats."
Impressed, the man reached into his wallet for the money to pay her.
"Oh, and by the way," she added, "that's not a Porch, it's a Ferrari!"