A tourist arrives at a sheepfold where he sees a shepherd with his dog near him.
“Listen, Mr. Shepherd, is your dog bad ?” the tourist asked.
“Yes, it is.”
“Does it bite ?”
“Yes, it does.”
“But I see it doesn’t bark !” said curiously the tourist.
Then the dog told the tourist:
“If so, then: Bow-Wow !”