There was a doctor in a mental hospital. One day when he came to see the patients in his ward, he saw a patient was doing something with a knife. As soon as the patient saw the doctor he stood up and came to the doctor with the knife as the doctor is murdered.

The doctor was so frightened that he ran up stairs. Then the mad fellow began to chase the doctor. Doctor ran as much as he can. Finally doctor stopped and turned back. Mad fellow came to him by huffing and puffing. Doctor begged not to do any harm to his life. Then that mad fellow came closer and placed a peace of apple on doctor’s palm saying “I didn’t know it is this difficult to give a peace of apple to a doctor”.