Time for sale

When a Father comes home 
And he is tired from work, 
His  five years old
Is waiting for him.
- Dad, how much you make an hour?
- 20 dollars my son,
- Can I have 10 dollars?,
The father looks his son on the eyes,
- Of course my son,
You never asked for money before
And he is giving him ten dollars,
The son removes also from his pocket,
Another ten dollars bill.
Father, now I have $20!
- You cheating  me son?
- No Dad, I will never do that to you.
But because you are absent to me a lot,
Only one hour from your time,
Only one hour, I love to buy …