Question: Ghosts is a film with the title referencing to a slang term for what?

Context paragraphs:
Can Live Music (Live 1971–1977): Can Live Music (Live 1971–1977) is a double live album by the band Can, released in 1999 and recorded in the UK and West Germany between 1972 and 1977 (despite the title referencing 1971).  It originally came as an item in the now out of print Can box set.

Zips: Zips (also Siggies or Geeps) is a slang term often used as a derogatory slur by Italian American and Sicilian American mobsters in reference to newer immigrant Sicilian and Italian mafiosi.  The name is said to have originated from mobsters' inability to understand the faster-speaking Sicilian dialects, which appeared to "zip" by.  Other theories include pejorative uses such as Sicilians' preference for silent, homemade zip guns.  According to still another theory, the term is a contraction of the Sicilian slang term for "hicks" or "primitives."  The older Sicilian mafiosi of pre-Prohibition known as "Mustache Petes" (who eventually were deposed by American-born mobsters during the Castellammarese War) were also referred to as zips.

Shiv (weapon): Shiv (possibly from the Romani word "chivomengro", "knife"), also "chiv", is a slang term for any sharp or pointed implement used as a knife-like weapon.  The "Oxford English Dictionary" suggests "shive", a razor, documented in 1915, as the root word.  In the 1920s, "shiv" was also a common slang term for a bladed weapon, mostly a knife.  In the United States, an improvised prison knife is also often called a shank.

Shmohawk: Shmohawk or schmohawk is a slang term that might have derived from "schmo", a slang term meaning "fool".  The HBO television show "Curb Your Enthusiasm" gave the word recent notoriety, and HBO even sells a "Curb Your Enthusiasm" schmohawk mug.  Earlier uses of the word can be found in the "Crusader Rabbit" animated cartoon "Crusader and the Schmohawk Indians", released in 1950 and in Saul Bellow's 1958 novel "Henderson the Rain King".

Ghosts (2006 film): Ghosts is a 2006 drama film directed by Nick Broomfield, based on the 2004 Morecambe Bay cockling disaster.  The title is a reference to the Cantonese slang term "Gweilo" (鬼佬), meaning "ghost man", used for white people.

Dongo: Dongo may refer to: The mix between a dingo and any other dog is referred to as a "Dongo" and also is a slang term for male genitalia.  Dongo is also reported to be, but is not widely used, as a slang term in Australia as a substitute for the color orange.

Nose, Iranian Style: Nose, Iranian Style is a 2005 Iranian documentary film directed by Mehrdad Oskouei.  It is about nose jobs (rhinoplasty) in Iran, which statistically has the most of any country.  The documentary employs a semi-comedic tone, with the title referencing the earlier film "Divorce, Iranian Style".  "Nose, Iranian Style" relates the trend to politics, with it and the 2007 documentary "" connecting it to the importance of appearance, given the taboo of men and women directly and socially interacting.  However, Oskouei said the film was truly a critique of excessive consumerism.

Gweilo: Gweilo or gwailou (, pronounced ] ) is a common Cantonese slang term for Westerners.  In its unmodified form, it applies only to European ethnicities and has a history of racially deprecatory use.  Cantonese speakers frequently use "gwailou" to refer to Westerners in general use, in a non-derogatory context, although whether this type of usage is offensive is disputed by both Cantonese and Westerners alike.

Beard (companion): Beard is a slang term describing a person who is used, knowingly or unknowingly, as a date, romantic partner (boyfriend or girlfriend), or spouse either to conceal infidelity or to conceal one's sexual orientation.  The American slang term originally referred to anyone who acted on behalf of another, in any transaction, to conceal a person's true identity.  The term can be used in heterosexual and homosexual contexts, but is especially used within LGBT culture.  References to beards are seen in mainstream television and films, and other entertainment.

Ducking (slang): "Ducking" is a prison slang term for a technique through which prisoners modify the behavior of correctional officers and other prison staff members using manipulation and coercion.  The prison slang term for a prison staff member that has been manipulated is a "duck".

Supporting paragraphs: Ghosts (2006 film) Gweilo
Answer: Westerners