This is from the book, NUTS! A History of Southwest Airlines...

Seems that the Southwest customer service department presents President Herb Keheller with letters that are difficult to answer. One time, somebody wrote to Southwest to actually complain that the toilet paper was hung upside-down in the lavatory. After much diliberation, nobody in customer service could think of a way to answer this letter so it was given to Herb.

He read the short letter and promptly started to write a response...

"Our toilet paper is hung correctly but what the hell were you doing upside down in one of our bathrooms?"

True story..read the book.