Private Pool

On a hot summer afternoon a beautiful young woman came across a secluded pool, largely hidden from view by a row of bushes. After checking that nobody was around, she took off all her clothes, but just as she was about to jump in, a man appeared from behind the bushes.
“I’ve been watching you!” he yelled, “This is private farm land, and I’m the owner. Swimming in this pool is strictly prohibited.”
“You could have told me that before I undressed!” she said.
The farmer replied: “Swimming is prohibited; undressing isn’t.”