Green’s Dictionary of Slang

1. an act of masturbation.

1786		‘The Court of Equity’ in Burns Merry Muses of Caledonia (1965) 210: He who when at a lass’s by-job, / Defrauds her with a frig or dry-bob.
a.1796		‘The Court of Equity’ in Farmer Merry Songs and Ballads (1897) IV 282: The sneak wha, at a lasses by-job / Defrauds her wi’ a frig or dry-bob.
1888–94		‘Walter’ My Secret Life (1966) I 130: Couples used to come for a grope, a frig, or even for a fuck.
c.1904		A. Crowley Snowdrops from a Curate’s Garden 18: His tool still dangled outside his trowsers [...] and he had relieved his feelings by a juicy yet glutinous frig.
2012		(con. 1980s) I. Welsh Skagboys 175: The last thing [...] Fi would contemplate daein would be giein the lassie a frig.

2. sexual intercourse.

c.1864		‘The Female Auctioneer’ in Rakish Rhymer (1917) 138: Ye bachelors, with p—ks so big, / I pray don’t be misled, / For I never yet have had a f— g.
1949		Monteleone Criminal Sl. (rev. edn).
1977		D. Powis Signs of Crime 184: Frig Sexual intercourse (taboo word).

3. a euph. for fuck n. in various fig. senses.

1944		A. Kapelner Lonely Boy Blues (1965) 93: Who the frig is Sam Duncan?
1962		H. Livings Nil Carborundum (1963) Act III: No ambition and frigg-all interest.
1967		(con. 1920s) J. Thompson South of Heaven (1994) 170: What the frig are you waiting on?
1977		A. Bleasdale Who’s Been Sleeping in my Bed 118: I don’t give a frig about other people.
1979		J. Morrow Confessions of Proinsias O’Toole 7: Francie, ferfrigsake. [Ibid.] 102: Who the frigs ’e think ’e is!
1981		W. Russell Educating Rita I vii: An’ I stood in that pub an’ thought, just what the frig am I trying to do?
1983		J. Byrell (con. 1959) Up the Cross 36: ‘[He] has offered to house and train and feed the nag for frig all’.
1993		(con. 1945) S. McAughtry Touch and Go 170: What the frig’s it got to do with you?
1996		J. Byrell Lairs, Urgers & Coat-Tuggers 198: ‘Choko McGruder [...] has offered to house, train and feed the nag for frig-all’.
2000		Greenberg & Tucille War of the Werewolf 265: ‘I still can’t figure out what the frig is goin’ on,’ Nicky said.
2003		Mad mag. Oct. 36: Why don’ you shut the frig up, Kenny.
2009		J. Joso Soothing Music for Stray Cats 116: What the frig was he on about?
2012		T. Robinson ‘Dirty Laundry’ in Dirty Words [ebook] ‘What the frig, man?’.

4. (US) a general derog. term of address.

1961

J.A. Williams Night Song (1962) 78: Do you dig, frig? Now do you understand? You white. It’s your world.

5. (US gay) lesbian sexual intercourse, based on the partners rubbing against each other’s body.

1999

Gaymart.com Queer Sl. in the Gay 90s 🌐 Frig – Sex between two women, often involving one rubbing the genitals of the other with her fingers; probably derived from friction.