Old joke but I'll say it anyway...
One day a dog went into town to the telegram office to send a telegram to his friend, carrying a piece of paper with the destination on it.
The lady working there thought it was silly but chose to humor the dog and asked him what he wanted to say.
The dog replied: "Ruff Ruff! Ruff! Ruff! Ruff! Ruff! Ruff! Ruff! Ruff!*
She turned to the dog and asked: "Would you like to add one more 'Ruff!' for no extra charge?"
The dog replied: "But that wouldn't make any sense!"