Caló has evolved in every decade since the 1940-1950s. It
underwent much change during the Chicano Movement of the
1960s as Chicanos began to enter U.S. universities and
become exposed to counterculture and psychedelia. Caló words
and expressions became cultural symbols of the Chicano
Movement during the 1960s and 1970s, when they were used
frequently in literature and poetry. Such language was
sometimes known as
floricanto. Caló enjoyed mainstream exposure when the
character "Cheech", played by Cheech Marin used Caló in the
Cheech and Chong movies of the 1970s.
By the 1970s, the
term Pachuco was frequently shortened to "'Chuco". The
Pachuco originated from El Paso, Texas, which was the root
of the city's nickname, "Chuco Town". Pachucos usually
dressed in zoot suits with wallet chains, round hats with
feathers and were Chicanos.
Caló is not to be confused with Spanglish, which is not
limited to Mexican Spanish. It is similar to Lunfardo, a mix
of Spanish and Italian spoken in Argentina's lowly barrios, in
that it has an eclectic and multilingual vocabulary.