Might be posted, but Exodiafinder w

One day a boy asked his mom and dad for some money and they said no.  When he went to school the next day and told his friend what happened, his friend said, "Tell them 'you don't have to worry anymore, I know' and they will give you money."

The boy asks, "What do I know?"

"It doesn't matter.  Your parents will be afraid to ask what you know and how you found out that they will just give you money to be quiet."

Well when the boy went home, he decided to give it a try figuring that he had nothing to loose.  So the boy went up to his mom, "Mom, you don't have to worry anymore, I know."

The boys mom got a big concerned look on her face, went to her purse, pulled out $20 and said, "Just don't tell your father you know."

Happy with the results, the boy left and decided to try with his dad.  "Dad, you don't have to worry anymore.  I know."  His dad turned to him, quickly reached in his wallet, pulled out $20 and said, "I don't know how you found out, just don't tell your mother."

Well even happier to see that his friend's advice worked, the boy wondered if this would work on any adult.  So the next day the mailman was walking up to the boy went out to meet him.  "Mailman, you don't have to worry any more.  I know."

The mailman stopped right where he was at got down on his knees with a tear in his eye and said, "Come here my son."