A very high-pressure vacuum cleaner salesman was forcing a home demonstration on a prospective customer. He took a large paper bag out of his case, and proceeded to scatter the contents all over Mrs. Whipple s beautiful living-room rug – coffee grounds, line, gravel, dust, eggshells, and all shorts of dirt. Then he said, Madam, I ll eat every bit of this stuff that my vacuum cleaner doesn t pick up. Mrs. Whipple started out of the room. Where are you going? Asked the sales man. To get you a knife and fork, she said. You see, we don t have electricity.