A man was out walking one day and went by a retirement home. As he passed the front lawn, he saw nine old ladies basking in the sun in lounge chairs. When he looked closer he realized that they were all stark naked.
He went to the door and rang the bell. When the director answered the door, the man asked if he realized there were nine naked old ladies lying in the sun on the front lawn.
The director said, "Yes" and went on to explain that the old ladies were all retired prostitutes living at the retirement home, and they were having a yard sale.