Mosquito net

       One day David asked to his wife to go to the market and buy a mosquito net. His wife went to a shop and asked shopkeeper to show her the best quality net.

    

     The shopkeeper showing her a very good net said, " This is the best quality which you won't be able to find elsewhere. Not even a single mosquito can pass through it."

    

    Mrs. David refused to buy the net. When the shopkeeper asked the reason, she said, "if a mosquito can't pass through it, then how we will pass through it." Then she returned home and narrated the whole matter to her husband.