The Whole TruthKyle told little Johnny that most adults are hiding at least one dark secret making it very easy to blackmail them by saying, "I know the whole truth."
Little Johnny went home to give it a try. He looked his mother in the eye and said, "I know the whole truth." She quickly gave him $20 and said, "Just don't tell your father." Undaunted, Little Johnny tried it on his big sister. She gave him every cent she had and begged him not to tell their parents. Little Johnny couldn't wait for his dad to get home.
As he greeted his father, Little Johnny said, "I know the whole truth." His father promptly handed him $40 and said, "Whatever you do, don't tell your mother."
Little Johnny was liking this game, so on his way home from school the next day, he saw the mailman coming up the front walk. Little Johnny said, "I know the whole truth." The mailman immediately dropped his mail bag, opened his arms and said, "Then come and give your daddy a great big hug!"