Once,when the barber had gone out of the shop for some work, one curious customer came to the assistant to ask him the reason for acting so dumb. He questioned the boy, "Do you like to be fooled in front of everyone. Do not you know that 10 rupees has more value than five rupees?"
The boy replied,"Well,I don't like to be fooled 😒 in front of everyone,but I do like to fool my master in frontvof everyone."
The customer was puzzled and felt that the boy was surely as dumb as his master considered him. However, he continued;"How can you say you are fooling everyone when everyone says you are a fool?"
The boy explained, "Now listen to me. Had I taken the 10 rupee note the first time the barber offered me, he would have never offered me again. Actually, I fool the barber every time he offers me money. He is arrogant and has never thought that he can also be the dumb in this case. He is blinded by his self-confidence and carelessly gives me 5 rupees every time only to make me look dumb in front of everyone. And in this way, I have earned 100 rupees till now."
The boy ended with this question and a grain,"So tell me, am I dumb or the barber?"
The customer was pleased by the wisdom of the boy and patted his back.

"So, we should never be overconfident of our abilities as there is always room for improvement."
_ES