A Boy And A Doctor Are Fishing

Riddle: A doctor and a boy were fishing. The boy was the doctor's son, but the doctor was not the boy's father. Who was the doctor?

Answer: His mother.

Source: https://www.riddles.com/index.php/7462

A doctor and a boy were fishing. The boy was the doctor's son, but the doctor was not the boy's father. Who was the doctor? — A boy and a doctor are fishing by Winnie Foster v1.

Riddle: A doctor and a boy were fishing. The boy was the doctor's son, but the doctor was not the boy's father. Who was the doctor? Answer: His mother. — by Winnie Foster v2.