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 of 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!" and she proceeded to close the door.
Quick as a flash the young man wedged his foot in the door and pushed it wide open.
"Don't be to hasty!" he said, "Not until you have at least seen my demonstration."
And with that, he emptied a bucket of Horse shit onto her hallway carpet.
"If this vacuum cleaner does not remove all traces of this Horse Shit from your carpet Madam, I will personally eat the remainder."
"Well," she said, "I hope you've got a good appetite, because the electricity was cut off this morning."