A new vacuum cleaner salesman knocked at the door. .
A lady opened it.
Before she could speak, the salesman rushed into the living room and emptied a bag of cow shit on the carpet.
Salesman: Madam, if I couldn't clean this up in next 3 mins with my new powerful vacuum cleaner, i'll EAT all this Shit! .
Lady: Do u need Chilli Sauce with that?
Salesman: why Madam?
Lady: Because there's no electricity in the house. .
MORAL: Over smartness can be dangerous