In Chilean Spanish there is lexical influence from Argentine dialects, which suggests a covert prestige.[28] Lexical influences cut across the different social strata of Chile. Argentine summer tourism in Chile and Chilean tourism in Argentina provide a channel for influence on the speech of the middle and upper classes.[28] The majority of the population receive Argentine influence by watching Argentine programs on broadcast television, especially football on cable television[28] and music such as cumbia villera on the radio as well.[28] Chilean newspaper La Cuarta regularly employs slang words and expressions that originated in the lunfardo slang of the Buenos Aires region. Usually Chileans do not recognize the Argentine borrowings as such, claiming they are Chilean terms and expressions due to the long time since they were incorporated.[28] The relation between Argentine dialects and Chilean Spanish is one of asymmetric permeability, with Chilean Spanish adopting sayings from Argentine variants but usually not the reverse.[28] Lunfardo is an argot of the Spanish language that originated in the late 19th century among the lower classes of Buenos Aires and Montevideo that influenced "Coa", an argot common among criminals in Chile, and later colloquial Chilean Spanish.