The Donkey and the Load of Salt
Long ago there lived a merchant. He used to deal in salt. He had a donkey to carry load. He used to sell his salt loaded on the donkey. He had to cross a stream to go to other village.
Once his donkey fell into the stream and much of the salt was dissolved in water. The donkey easily crossed the stream due to the light weight of salt on his back. The donkey was happy.
The donkey on his next trip knowingly fell into the stream. The merchant suspected the animal's intention. On the other day too the donkey intentionally repeated the same trick. His master was now sure about the animal's evil intention.
The merchant next day loaded the donkey with a lot of cotton. The donkey once again repeated the same trick. He fell into the stream. This time his load became very heavy.
The donkey carried the heavy load. It was very tiring for him to move on. The donkey now realized his mistake. He stopped falling down into the stream any more. He thought that it was not good to play tricks. The merchant had taught the donkey a good lesson.
You can be fool a person a few times but not always.