Once upon a time, there lived a poor hat seller in a small village in India. He earned his livelihood stitching hats and selling them in the neighboring villages. Once when going to another village through a forest, he fell asleep under a tree. When he woke up, he was surprised to find his basket empty and all the hats missing. Then he noticed a troop of monkeys sitting in the tree wearing his hats. He came up with a brilliant idea to retrieve his hats. He lifted the hat on his head and threw it to the ground. Out of their aping habits the monkeys followed suit. The hat seller then collected all the hats and triumphantly proceeded to the market.
As the years pass by, the hat seller has a grandson who too ends up being a hat seller. One day he has to pass through the same forest to sell hats in the village on the other side. As he is leaving, his grandpa tells him of the monkeys and how he outsmarted them and warns the grandson to be careful in the forest and remember his grandpa's trick if the monkeys cause any trouble.
So the grandson sets forth on his journey. While passing through the forest, he gets tired and falls asleep to wake up and find the basket empty and all the hats gone. Then he notices the monkeys on the tree wearing the hats. Smiling to himself he says, "Aha ! I know how to deal with this. I'll use my grandpa's trick ! So he hurls his hat to the ground expecting the monkeys to do the same. All this time, there is a young hatless monkey sitting in the tree. This monkey jumps down from the tree, quickly picks up the grandson's hat and puts it on his head. Then as he is scampering away, he says to the grandson sarcastically:
"HA! HA! DID YOU THINK ONLY HUMANS HAVE A GRANDPA!?"