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, lint, gravel, dust, eggshells, and all sorts 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 salesman.

"To get you a knife and fork," she said. "You see, we don't have electricity."