Once upon a time, an angry boy lived in a village called Gembu. He always spoke to people angerily, sometimes using insultive language.

In an attempt to change the bad characters of his son so that he becomes a good boy, the father came up with an intelligent idea.

He gave the boy a bag of nails and said to him, "whenever you are angry, pick out one nail, hit it and leave it on the body of that tree".

The boy collected the bag from his father and he left. From that moment, each time the boy got angry, he remembers what his father had told him to do when he is angry. From that time, the boy does what his father told him to do.

As time goes on and the boy contunued hitting nails on the tree, he noticed that the tree is being affected by the number of nails been hit on it.

It then occurred to him immediately that, this is how everyone feels and is badly affected, whenever he hits them with insultive words. Gradually, his anger subsided and the angry boy bacame a gentle boy whome other children came to love.