Salesman

A new vacuum cleaner salesman knocked on the door onthe first house of the street. A tall lady answered the door.
Before she could speak, the enthusiastic salesman barged into theliving room and opened a big black plastic bag and poured all the cowdroppings onto the carpet.
" Madam, if I could not clean this up with the use of this newpowerful vacuum cleaner, I will EAT all this s...!" exclaimed theeager salesman.
"Do you need chilli sauce or ketchup with that?" asked the lady.
The bewildered salesman asked, " Why, madam?"
"There's no electricity in the house..." said the lady.