The hacker boy one day came back from school panting, sweating and exhausted. His father asked him:

- What happened to you?

- I figured that if I ran behind the bus, I'll save the $3 dollars the ticket costs-

The hacker father smacked his son hard on the head and cried:

- You fool! To run behind a bus like that! You should have ran behind a taxi instead and you would have saved at least $50 dollars!

Then they both watched YouTube together the rest of the evening, thinking eagerly about all the juicy money they would save over the next decade.