The mayor of Phoenix was very worried about a plague of pigeons in Phoenix. He could not remove the pigeons from the city.  All of  Phoenix  was full of pigeon poop, the people of  Phoenix could not walk on the sidewalks, or drive on the roads.It was costing a fortune to keep the streets and sidewalks clean.
One day a man came to City Hall and offered the Mayor a proposition. 
I can rid your beautiful city of its plague of pigeons without any cost to the city. But, you must promise not to ask me any questions.  Or, you can pay me one million dollars to ask one question.' 
The mayor considered the offer briefly and accepted the free proposition. 
The next day the man climbed to the top of City Hall, opened his coat, and released a blue pigeon.  The blue pigeon circled in the air and flew up into the bright blue Arizona sky. All the pigeons in Phoenix saw the blue pigeon and gathered up in the air behind the blue pigeon. The Phoenix pigeons followed the blue pigeon as she flew southward out of the city. 
The next day the blue pigeon returned completely alone to the man atop City Hall.
The Mayor was very impressed. He felt the man and the blue pigeon had performed a wonderful miraculous service to rid Phoenix of the plague of pigeons. Even though the man with the pigeon had charged nothing, the mayor presented him with a check for one million dollars and told the man that, indeed, he did have a question to ask and even though they had agreed to no fee and the man had rid the city of pigeons, he decided to pay the 1 million just to get to ask ONE question. 
The man accepted the money and told the mayor to ask his ONE question.
Do you think the Mayor is going to ask how the blue pigeon led all the pigeons away?
Do you think the Mayor is going to ask where all the pigeons went? 
Do you think he is going to ask where the man got the blue pigeon?
Nooooooo!  
The mayor asked: Do you have a blue Mexican?