An American visiting Scotland met a shepherd with a beautiful sheepdog. The American offered the owner $50 for the dog, but the shepherd refused. "I couldn't part with Jack," he said.
Just then, a man with an English accent walked up and made the same offer. The shepherd agreed, pocketed the money, and handed over the dog.
The American was very angry. "You told me you wouldn't sell that dog," he cried.
"No, no," said the shepherd. "I said I couldn't part with him. England is not that far away, and Jack will be back in a couple of days. But he couldn't swim the Atlantic."