Than with the help of needle the student puts the needle in the ear hole of 1st toy. The needle comes out from the other ear. In the 2nd toy, when the needle was put in ear the needle came out of mouth. And in the 3rd toy, when the needle was put in, the needle did not come out.
First toy represent those people around you who gives an impression that they are listening to you, all your things and care for you. But they just pretend to do so. After listening, as the needle comes out from the next ear, the things you said to them by counting on them are gone. So be careful while you are speaking to this type of people around you, who does not care for you.
Second toy represent those people who listens to you all your things and gives an impression that they care for you. But as in the toy, the needle comes out from mouth. These people will use your things and the words you tell them against you by telling it to others and bringing out the confidential issues for their own purpose.
Third toy, the needle does not come out from it. These kinds of people will keep the trust you have in them. They are the ones who you can count on.
Moral: Always stay in a company of a people who are loyal and trustworthy. People, who listen to what you tell them, are not always the ones you can count on when you need them the most.