A guy walks into a shoe store and asks for a pair of shoes that are clearly undersized for him. The salesman says, "But, sir, I can see from up here that you'll need much bigger shoes than that."
The guy says, "That's OK, please bring me the smaller ones."
The salesman brings them, the guy stuffs his feet into them, ties them tight, and then he stands up, obviously in pain. The salesman just has to ask, "Sir, why must you have these undersized shoes?"
He says to the salesman, "I work a boring job, my mother-in-law has just moved in with us, my wife is nagging all the time, and our daughter does nothing but run around screaming the whole day. The only pleasure I have in life is taking off these tight shoes."
"This house," said the real estate salesperson, "has both its good points and its bad points. To show you I'm honest, I'm going to tell you about both. The disadvantages are that there is a chemical plant one block south and a slaughterhouse a block north."
"What are the advantages?" inquired the prospective buyer.
"The advantage is that you can always tell which way the wind is blowing."