Green’s Dictionary of Slang

straight n.2

1. a conventional, respectable person, as opposed to a criminal.

[UK]‘Doss Chiderdoss’ ‘The Blokes Outside’ Sporting Times 6 Aug. 1/4: When I see the ‘crooks’ thought more of than the ‘straights,’ / I feel sorry for the blokes outside!
[US]C. Stroud Close Pursuit (1988) 41: The way the straights and the shits were mixed up over there, no sensible citizen would freely give a cop good information.
[Aus](con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 2: That June of ’63 King’s Cross was [...] brothels, hookers, pimps, hoons, charity molls, spruikers, toffs, chats, mooks, lairs, mugs, phizgigs, drag queens, straights, shines, bent cops, [...] tea leaves, neon, glitz.
[UK]N. Cohn Yes We have No 145: A scattering of straights, seeking refuge.
[UK]Guardian Rev. 18 Mar. 3: How the boys in the back of the bus must have laughed at the straights.
R. Brunet ‘Lucky for Me’ in ThugLit Dec. [ebook] ‘You’ve got straight written all over you’.

2. conventional heterosexual intercourse in the face to-face ‘missionary position’; thus in prostitute’s use, straight date n., one who desires conventional intercourse; straight girl n., a prostitute who only offers such a service; also pornography featuring this.

[US] ‘Mme. Dora in “Strictly Business”’ [comic strip] in B. Adelman Tijuana Bibles (1997) 75: What do you want honey? Straight, French or any other?
[US]D. Maurer ‘Prostitutes and Criminal Argots’ in Lang. Und. (1981) 117/1: straight. Normal sexual intercourse; a straight date, a customer who wants normal intercourse; a straight girl, one who does not practice perversions.
[US] in S. Harris Hellhole 91: And she said, ‘Twenty bucks.’ And I said, ‘What do I get for that?’ And she said, ‘A straight or Frenchy if you want it.’.
[US]‘Heat Moon’ Blue Highways 191: I heard girls at the Big Four are getting twenty-five simoleons for a straight.
[UK](con. 1960s) A. Frewin London Blues 69: straight is a white couple doing it missionary style or side by side (but certainly not doggy style).

3. (orig. gay) a heterosexual person.

[US]Lavender Lex. n.p.: straight:– Any person other than a homosexual.
[US] in S. Harris Hellhole 222: Men in grey flannel suits who strive to look like straights but disclose themselves as what they are by [...] the flicking of a finger.
[US]A. Maupin Tales of the City (1984) 96: A couple of sherbet straights, doing a very showy Arthur Murray routine.
[US](con. 1940s) C. Bram Hold Tight (1990) 96: Two randy straights who could say it all to each other.
[Aus]R.G. Barratt ‘Poofs on Parade’ in What Do You Reckon (1997) [ebook] [J]ust part of the double standards we poor, silly straights are forced to live under in this State.
[Aus]R.G. Barrett Davo’s Little Something 23: You straights give me the shits.
[US]Kennedy & Davies (con. 1940s-50s) Boots of Leather (2014) 7: The term ‘bull-dagger’ was used by hostile straights as an insult.
[UK]Guardian G2 16 Dec. 4: I’m too poofy for the poofs and too scary for the straights.
[UK]Guardian 23 Sept. 11/4: Mocking straights, ‘faggots’ and Lesbians, midgets, ‘fat girls’ [...] whichever minority she’s just dissed.
[US]T. Pluck Boy from County Hell 156: His cellie Raina had told him how obsessed with sex and genitals ‘straights’ were.

4. (also straight-head) used by members of the ‘counter-culture’ to describe a member of Establishment society.

[US]Newsweek 30 Oct. 85: For most straights, press reports of the East Village murders added a sinister new word to their glossary of hipisms.
[UK]Gandalf’s Garden 6 n.d. 11: straights: basically people, groups, organisations, etc. who confine themselves to an extremely limited view of the world and conception of themselves, under the impression that they are broadminded, but who have a straight-jacketed mentality, causing them to deride or disbelieve anything which is not projected by establishment manipulated media [...] Conformist, ‘square’, unfree, restricted for fear of others’ opinions.
[UK]G.F. Newman You Flash Bastard 64: A highly responsible member of a highly respected profession coming to try and corrupt the untouchable CID. He wondered fleetingly what the general public [...] who still had faith in the police, belief in the system, would make of it. What would they do without those straights? Without them it would all disintegrate.
[US]C. McFadden Serial 32: A superstraight with a button-down banker’s mind.
[UK]B. Hare Urban Grimshaw 222: Most straight-heads don’t understand what the drug culture is all about.

5. (US campus) one who stands outside the current social norms.

[US]Eble Sl. and Sociability 59: Three geometric terms – straight, square, and quad – are all derogatory epithets that designate with various connotations ‘a person who does not fit in with the prevailing college life style’.

6. (N.Z. prison) as ext. of sense 1 within prison environment, a prisoner who abides by the rules and has now previous criminal experiuence.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 179/1: straight (also straighty) n. a well­ behaved, innocent inmate, esp. one who does not use drugs or alcohol, and has no previous criminal convictions.

In derivatives

In phrases

run off the straight (v.) [i.e. the ‘straight and narrow’]

to abandon a respectable life for criminality.

[UK] ‘’Arry on a Jury’ in Punch 15 Apr. 177/1: Oh, don’t be alarmed, dear old chummie, I aven’t bin run off the straight.