To get a massive and immediate attention from a buyer, the Vacuum Cleaner salesman opens a bag of horse manure and spreads it all over the carpet.

Then he says to the possible buyer with confidence, "Mrs. if this vacuum cleaner can't clean all that manure I will eat the rest!"

The lady asks, "Do you want ketchup with that?"

Why the salesman ask?

"Because we just moved in and we don't have electricity yet!"