"This house has both advantages and disadvantages," said the real-estate agent. "And to show you what an honest person I am, I will tell you about the disadvantages. In the first place, the stockyards are half a mile to the west. North is a rubber factory. Two blocks east is the sewage-disposal plant. And just south is the vinegar works."
"Well, what are the advantages?" gasped the prospective buyer.
"You can always tell which way the wind is blowing."