Most powerful vacuum cleaner

A vacuum cleaner salesman turns up at a cottage and raps on the door. The lady of the house answers.

"Ma'am, I am here to demonstrate the wonders of what is probably the most powerful vacuum cleaner in the world." he announces, and taking advantage of her hesitancy he lets himself in with said machine.

"Now," he commands with infectious enthusiasm, "prepare to be amazed."

He takes out a sack of horse shit and throws it all over the new carpet she has had just had fitted, and then proceeds to take another sack of said organic waste and tips it onto her spanking new sofa.

"Upset? Fear not!" and he plugs the vacuum cleaner into the wall."Now, when I depress the switch, this cleaner will clean that lot up to your entire satisfaction - otherwise, I'll eat all that horse shit!"

He presses the switch. Silence, a very long silence.

"You want ketchup with that?" says the angry woman, "We just moved in and the electricity isn't connected yet!"