Naco (fmn. naca) is a pejorative word often used in Mexican Spanish to describe bad-mannered and poorly educated people. A naco is usually associated with lower socio-economic classes, but could also sometimes include the nouveau riche.erga - penis when used as a noun, may also be used as an interjection to express worry. chingon chingón and its politer equivalent - chido equivalent to the aesthetic. cool - nave literally, ship used to refer to a. car - wey', fella. buddy