Hella is an American slang term that originated in East Oakland, California, but has since spread to become native slang to all of northern California.
 It is used as an adverb such as in "hella bad" or "hella good" and was eventually added to the "Oxford English Dictionary" in 2002.
 It is possibly a contraction of the phrase "hell of a" or "hell of a lot [of]", in turn reduced to "hell of", though some scholars doubt this etymology since its grammatical usage does not align with those phrases.
 It often appears in place of the words "really", "a lot", "totally", "very", and in some cases, "yes".
 Whereas "hell of a" is generally used with a noun, according to linguist Pamela Munro, "hella" is primarily used to modify an adjective such as "good".
On the Down Low: A Journey Into the Lives of Straight Black Men Who Sleep with Men is a 2004 New York Times Bestselling non-fiction book by J. L. King.
 The book was released in hardback on April 14, 2004 through Broadway Books and details the sexual lives of African-American men who are on the "down low" or having sex with men while posing or identifying as heterosexual.
 When the book was initially released, King denied claims that he was gay in both the book and in the media, but later confirmed that he was gay in 2010.
Ratfucking is an American slang term for political sabotage or dirty tricks.
 It was first brought to public attention by Bob Woodward and Carl Bernstein in their book "All the President's Men".
Good ol' boy (also good old boy) is an American slang term that can have both positive and negative meanings, depending on context and use.
 The term is commonplace in the Southern United States.
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.
The Historical Dictionary of American Slang, often abbreviated HDAS, is a dictionary of American slang.
 The first two volumes, "Volume 1, A – G" (1994), and "Volume 2, H – O" (1997), were published by Random House, and the work then was known as the Random House Historical Dictionary of American Slang, sometimes abbreviated as RHHDAS.
 Both volumes used the same ISBN, ISBN  ; the paperback editions are ISBN  for Volume 1 and ISBN  for Volume 2.
Iron Mike is the "de facto" name of various monuments commemorating servicemen of the United States military.
 The term "Iron Mike" is uniquely American slang used to refer to men who are especially tough, brave, and inspiring; it was originally a nautical term for a gyrocompass, used to keep a ship on an unwavering course.
 Because the use of the slang term was popular in the first half of the 20th century, many statues from that period acquired the Iron Mike nickname, and over the generations the artists' titles were largely forgotten.
 Even official military publications and classroom texts tend to prefer the nickname to the original titles.
Down-low is an African American slang term that typically refers to a subculture of black men who usually identify as heterosexual, but who have sex with men; some avoid sharing this information even if they have female sexual partner(s) married or single.
 The term is also used to refer to a related sexual identity.
 Down-low has been viewed as "a type of impression management that some of the informants use to present themselves in a manner that is consistent with perceived norms about masculine attribute, attitudes, and behavior".
Metrosexual is a portmanteau of "metropolitan" and "sexual", coined in 1994 describing a man (especially one living in an urban, post-industrial, capitalist culture) who is especially meticulous about his grooming and appearance, typically spending a significant amount of time and money on shopping as part of this.
 The neologism is popularly thought to describe heterosexual men who adopt fashions, lifestyles, and behaviors stereotypically associated with homosexual men.
 While the term suggests that a metrosexual is heterosexual, it can also refer to gay or bisexual men.
Fern bar was an American slang term for an upscale or preppy (or yuppie) bar or tavern catering to singles, usually decorated with ferns or other greenery, as well as such decor as fake Tiffany lamps.
 The phrase came into common use in the late 1970s or early 1980s.

Question: What is the African American slang term that heterosexual men that sleep with other men use?
Answer: Down-low