A new vacuum cleaner salesman knocked on the door on the first house of the street, in Michenzani Zanzibar. It was on the 5th floor without a lift, but he was happy to go up there and show his new product. A mid-aged lady answered the door. "Karibu Mgeni"welcome Before she could continue, the enthusiastic salesman barged into the Living Room and opened a big black plastic bag and poured all the cow dung (droppings) onto the carpet. "Madam, if I could not clean the mess up with this new, excellent and powerful Vacuum Cleaner, I will EAT all this shit!" exclaimed the eager salesman. "Do you need chili sauce (mbuzi) or ketchup with that?" asked the lady. The bewildered salesman asked, "Why, madam? "Because there's no electricity in the house" said the lady.