Sorry,my mistake...:p

Thanks Wei Jian,for spotting the mistake. The 'he' should be 'she'.

A father was driving his car.His son was in the car too.The father crashed into a tree.He was killed instantly and his son was sent to the hospital.The son had to be operated to stay out of danger.But when the doctor saw the boy,he said,"I can't operated on him.He's my son."