This article possibly contains original research. (November 2010)
Naco (fmn. naca) is a pejorative word often used in Mexican Spanish to describe the bad-mannered and poorly educated people of lower social classes. It doesn't have a direct equivalent in American English and culture, although the term 'redneck' is somewhat similar. . 
Definition and usage
The term naco is generally used to describe people, behaviors or aesthetic choices seen as unrefined or unsophisticated, often in a comic way. As a person, the "naco" may display a general lack of refinement by adopting a "gangster mentality", unrefined verbal expressions or slang, peculiar accents, lack of social manners, or comically bad taste. The term is often associated to lower social classes, but it is also used as an elitist expression from the educated to describe the uneducated, and among the middle and upper classes as a synonym of bad taste. In many situations, the word may have no derogatory intention and may even demonstrate familiarity.
In the last decades, the middle and upper classes in Mexico have experienced a rapid expansion due to, among other things, economic development and urbanization. The new middle class and "nouveau riche" have entered the competition on status symbols such as cars, houses, and jewelry, which have given rise to the term "naco" as a form of cultural or economic elitism. Mexicans of higher status often see extravagant displays of wealth as making a person more naco, in that they make spectacles of themselves by overcompensating for lower social status.
- Mexican Spanish
- White trash
- Güey Spanish - Mexican Slang Dictionary http://www.gueyspanish.com/word/155/naco
- EQUIS magazine. Cultura y Sociedad. Braulio Peralta (ed). México, Ulises Ediciones, No. 1, May, 1998, pp. XVII-XX. (Dossier: Autonomías en el mundo)