Question: What Spanish phrase does the song by Tom Waits "Romeo Is Bleeding" use that efers to a particular old school subculture of Chicanos and Mexican-Americans?

Context articles: Romeo Is Bleeding
Romeo Bleeding: Live from Austin
Beautiful Maladies
Hang Down Your Head
Romeo Is Bleeding (song)
Ol' '55
Anthology of Tom Waits
Pachuco
Abraham F. Arvizu
Bad as Me (song)

Romeo Is Bleeding is a 1993 neo-noir crime film starring Gary Oldman and Lena Olin, directed by Peter Medak.
 Its title was taken from a song by Tom Waits.
 Although the film was critically unsuccessful and a box office bomb, the central performances by Oldman and Olin have been praised.
Romeo Bleeding: Live from Austin is a live album by Tom Waits, first released in 2009 on Immortal/IMC Music Ltd.
 The album was recorded on December 5, 1978 in Austin, Texas.
 This album is not approved by the artist.
Beautiful Maladies: The Island Years is a Tom Waits compilation album, consisting of previously released songs from his years recording with Island Records, most notably from the albums "Swordfishtrombones", "Rain Dogs", "Big Time" and "Franks Wild Years".
 The tracks were selected by Tom Waits.
 The album was released in 1998, but represents Waits's output from 1983 to 1993.
Hang Down Your Head is a song by Tom Waits appearing on his 1985 album "Rain Dogs".
 It released as a single in 1985 by Island Records.
 The song is in the same vein as Tom Waits' earlier work, featuring a more conventional melodic structure in comparison to other songs on his "Rain Dogs" album albeit featuring an idiosyncratic arrangement.
 Allmusic critic Stewart Mason called the song "among the most direct and effective things Waits has ever written."
"Romeo Is Bleeding" is a song written and performed by Tom Waits, and released on his 1978 album, "Blue Valentine."
 The lyrics make frequent use of Spanish, including phrases such as "Hey Pachuco!"
, "Dáme esa pistola, hombre!"
 (Give me that pistol, man!)
, "Hijo de la chingada madre!"
 (You son of a fucking whore!)
, and "Vamos a dormir, hombre" (Let's go to sleep, man).
 Waits also makes a reference to gangster movie-star James Cagney, also mentioned in "Invitation to the Blues" from the album "Small Change."
"Ol' '55" is a song by American musician Tom Waits.
 It is the opening track and lead single from Waits' debut studio album, "Closing Time", released in March 1973 on Asylum Records.
 Written by Waits and produced by Jerry Yester, "Ol' '55" was a minor hit.
 The song has been covered by numerous artists, most notably by the Eagles on their "On the Border" (1974), although Waits has been critical of the Eagles' cover version of the song, admitting that he was "not that particularly crazy about (their) rendition of it ... I thought their version was a little antiseptic."
Anthology of Tom Waits is the first "best of" compilation of Tom Waits recordings, with tracks taken from his albums for Asylum Records.
Pachuco refers to a particular old school subculture of Chicanos and Mexican-Americans associated with zoot suits, street gangs, nightlife, and flamboyant public behavior.
 The idea of the pachuco – a zoot-suited, well-dressed, street-connected flamboyant playboy of Hispanic/Latino heritage – originated in El Paso, Texas, and Ciudad Juárez, Mexico, had moved north, following the line of migration of Mexican railroad workers ("traqueros") into Los Angeles, where it developed further.
Abraham F. Arvizu (1928-1988) was a pioneering community activist and youth developer from Phoenix, AZ, and is credited with being the "driving force" of Sacred Heart Church's Southside Catholic Youth Center (SCYC), the forerunner of the Barrio Youth Project.
 Barrio Youth Project organized the boycott against the Phoenix Union High School District from October 9 - November 2, 1970, which led to systematic wide changes to end the discrimination of Mexican-Americans within the local school system.
 These events at the end of the civil rights era catalyzed the creation of Phoenix-based community organizations, such as Chicanos Por La Causa and Valle Del Sol.
 Arvizu was eventually elected to the board of directors of Chicanos Por La Causa, and many of the youth he developed went on to be political activists, elected officials, and contributing members to society.
"Bad as Me" is a song by American rock musician Tom Waits, written collectively by Waits and his wife Kathleen Brennan.
 Written and recorded during the sessions for his studio album of the same name, the song was released as Waits' seventeenth single on August 23, 2011 and was the first new studio material by Waits in seven years, since "Real Gone" in 2004.