You mean like this one?
A vacuum salesman appeared at the door of an old lady's cottage and, without allowing the woman to speak, rushed into the living room and threw a large bag of dirt all over her clean carpet. He said, "If this new vacuum doesn't pick up every bit of dirt then I'll eat all the dirt."
The woman, who by this time was losing her patience, said, "Sir, if I had enough money to buy that thing, I would have paid my electricity bill before they cut it off. Now, what would you prefer, a spoon or a knife and fork?"
