By Cindy Y. Rodriguez, CNN

(CNN) - Gustavo Arellano is not politically correct in his "Ask a Mexican" column.  He calls Cinco de Mayo "Gringo de Mayo" and regularly plays on stereotypes Americans have of Mexicans.

But he answers readers' questions with enough gusto and satiric flare that many might forget they are being educated on Mexican customs, immigration and labor issues.  What began as a spoof in 2004, is now one of OC Weekly’s most popular columns, appearing in 39 cities across the U.S., with a weekly circulation of over 2 million.

In addition, Arellano is now regarded as “perhaps the greatest (and only) living scholar of Mexican-American fast-food." He shares that knowledge in his new book, "Taco USA:How Mexican Food Conquered America." It tells the story of how Mexican food transformed the way Americans eat as it has entered popular culture, unlike any other "ethnic" food.

Gustavo Arellano spoke to CNN about Mexican food in the United States, what Mexican dish he hopes Americans co-opt next, and why he thinks celebrating Cinco de Mayo is silly.  FULL POST