bareback, adv. — Green’s Dictionary of Slang

bareback adv.

[the nakedness of the penis; note ride v. (1a)]

having sexual intercourse without using a contraceptive sheath; also occas. as adj.; thus bareback rider, a man who has sex without a condom.

1959		M. Richler Apprenticeship of Duddy Kravitz (1964) 185: You’re twenty-four years old. Don’t you know better than to go bareback?
1960, 1975		Wentworth & Flexner DAS 20/1: bareback rider A male who enters into sexual intercourse without using a contraceptive.
1969		M. Puzo Godfather 313: I’ve had to treat him three times for clap and once for syphilis. Freddie is the original bareback rider.
1972		B. Rodgers Queens’ Vernacular 97: go Hollywood (obs, ’40s) 1. to mingle with gays . . . socially or bareback.
1974		(con. 1945) M. Angelou Gather Together In My Name 165: He opened his pants. Dignity rode his face bareback.
1986		S. King It (1987) 518: Your days of gaily going in bareback with no questions asked have temporarily come to an end.
1997		in POZ June 🌐 Fucking raw. Riding bareback. Skin-to-skin. With such delicious images, it’s easy to stop thinking of it as unsafe sex.
2001		(con. 1981) A. Wheatle East of Acre Lane 253: Charge more fe a bareback rider, £5 more.
2002		(con. 1981) W. Self Dorian 115: I’ve heard that you keep right on doing all kinds of stuff, riding bareback —.
2002		Treasure Island Media video catalogue 🌐 Knocked Up [...] KNOCKED UP features a whole congregation of the hottest big-dicked topmen I know. Steve Parker, Titpig, Tom Shannon, Erich Lange (in his video debut as a bareback top) [...] and a bunch of other testosterone-driven men with nothing on their minds but fuck-or-be-fucked.
2006		D. Seabrook Jack of Jumps (2007) 189: And yet at least one man got to ride Teddy bareback.
2011		Salon.com 20 Nov. 🌐 Big-screen, high-definition televisions displayed [...] bareback bear porn on four walls.
2015		I. Welsh Decent Ride 33: So ah’m thinkin aboot lassies '[...] ah fired intae bareback that weekend.
2016		pinknews.co.uk 9 Nov. 🌐 California votes against banning bareback porn.

In derivatives

barebacking (n.) (also bareback riding)

hetero- or homosexual intercourse without the use of a condom; thus bareback rider, one who has intercourse without a condom.

1998		R. Scott Rebecca’s Dict. of Queer Sl. 🌐 barebacking or bareback sex — unsafe sex. A term used mostly by gay men.
2001		Guardian 27 Jan. 22: What Peter Mandelson did was the political equivalent of bare-backing [...] episodes of unprotected sex.
2001		OnLine Dict. of Playground Sl. 🌐 bareback riding v. to have sexual intercourse (homo. or hetero.) without using a condom.
2016		D. Whish-Wilson Old Scores [ebook] She shrugged off the bareback rider and reached for a towel.
2018		I. Welsh Dead Man’s Trousers 152: You cannae keep it in your troosers and have tae bareback ride some slag.