A little old lady answered a knock on the door one day, only to be confronted by a well-dressed, young man carrying a vacuum cleaner..

"Good morning," said the young man. "If I could take a couple
minutes of your time, I would like to demonstrate the very
latest in high-powered vacuum cleaners."

"Go away," said the old lady. "I haven't got any money, I'm broke!" As she proceeded to close the door, the young man wedged his foot in the door and pushed it wide open.

"Don't be too hasty," he said, "Not until you have at least seen my demonstration!" And with that, he emptied a bucket of horse manure onto her hallway carpet.

"If this vacuum cleaner does not remove all traces of this horse
manure from your carpet, Madam, I will personally eat the
remainder." The old lady stepped back and said, "Well I hope you've got a really good appetite, because they cut off my electricity this morning."