Porsche for $15

A 16 year old boy comes home with a Porsche and parents ask him:
-Where did you get this car?

He calmly replied:
-I just bought it.
With which money?

- Well, she said, it cost $15.

- Who would sell such a car for $15??
- Is just up the street. I do not know her name, she moved recently here.
I was passing with my bike and she asked me if I wanted to buy a Porsche for $15.

- Stupid lady! said the mother, this is child abuse. Who knows what will be next? go there immediately to see what is happening.

The father went to the lady's house and she calmly planted roses in the garden.

He introduced himself as father of the boy to whom she sold the Porsche and asked why she had done it.

- Well, she said, I thought my husband was traveling for work, but discovered that he fled to Hawaii with his secretary and does not intend to come back ...
This morning he called me and asked to sell the Porsche and send him the money ...
So I sold it...