DAD & SON

A tired man came home late from his whole day hard work. His 5 year old son was waiting for him at the door.

Son: "Dad, may I ask you a question?"
Dad: "Sure. What?"
Son: "Dad, how much do you make an hour?"
Dad: "That's not your bussines."
Son: "Dad, please ...! Please tell me ...!"
Dad: "Okay .... $20 per hour ...."
Son: "Oh ...."

Then, the kid go to his bedroom. After 10 minutes, he's come to his Dad and asking again.

Son: "Dad, may I borrow $10? Please?"

Dad got angry and shouted on the kid to go to the bed. The little boy went to his bedroom and shut the door.
After sometime man got calm, he went to his son's room, and said, "I'm sorry for being so hard. Here's your $10, you asked for."

Son: (smile)
"Oh, thank you so much, Daddy!"

Then, the boy took out some coins. He had kept under the pillow, he counted them and said,

"Dad ....

I have $20 now,

can I buy an hour of your time?

Please come home early tomorrow ....

Because I would like to have dinner with you ...."