A man and his son went out in a car.
They had an accident.
Two ambulances came to the scene and took the father and his son to two different hospitals. When the son was admitted to the OR, the doctor who was supposed to make the operation looked at the boy and said: "I can't operate to this boy, he is my son"...

How is that?

 

 

 

 

 

 

 

 

 

 

The Doctor is a woman, and she is the boy's mother ;-)