At school, a classmate told Little Johnny that most adults have at least one dark secret and it is very easy to earn money from them by saying, “I know the whole truth.”
Little Johnny decides to go home and try it out. He goes home and when he is greeted by his mother, he says: “I know the whole truth”.
His mom quickly gives him $20 and says, “Don’t tell your dad.”The boy happily waits for his father to come home from work and greets him with, “I know the whole truth.”The father immediately gives him $40 and says, “Please don’t tell the secret to your mother.”