The Income Tax Woman

A dad walked into a market with his young son. The kid was holding a quarter.
 
Suddenly, the boy started choking and gasping for breath.
  
The dad realized the boy has swallowed the coin and started panicking, shouting for help.
 
A well dressed, attractive, but serious looking woman in a blue business suit was sitting at a table in the coffee shop reading her newspaper and sipping a cup of  coffee.
 
At the sound of the commotion, she looked up, puts her coffee cup down on the saucer, neatly folded the newspaper, placed it on the counter, got up from her seat and made way, unhurried, to the boy.
 
Reaching the boy, the woman carefully took hold of the boy's balls and started to squeeze, gently at first and then ever more firmly. After a few seconds the boy convulsed violently and coughed up the coin, which the woman deftly caught in her free hand. Releasing the boy, she handed the coin to the father and walked back to her seat without saying a word.
 
As soon as he is sure that his son has suffered no lasting ill effects, the father rushed over to the woman and started thanking her saying, "I've never seen anybody do anything like that before, it was fantastic. Are you a doctor?"   
     
"No," the woman replied, "I work for the Income Tax Dept."