Green’s Dictionary of Slang

vinegar n.

1. (UK Und.) a cloak, an overcoat.

[UK]B.E. Dict. Canting Crew n.p.: Vinegar c. a Cloak.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
[UK]B.M. Carew Life and Adventures.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]G. Andrewes Dict. Sl. and Cant.
[UK]Lex. Balatronicum.
[UK]Flash Dict.
[US]Matsell Vocabulum.

2. semen.

[UK]M. Manning Get Your Cock Out 85: The cabbie [...] had managed to squirt out another splash of vinegar which caught Dandy in the eye.

In compounds

SE in slang uses

In compounds

vinegar pisser (n.) [piss v. (1)]

a miser, a mean person, thus piss vinegar, to be mean.

[UK]Return from Parnassus Pt II III ii: They are pestilent fellowes, they speake nothing but bodkins, and pisse vinegar.
T. Uquhart Pantagruel 402: [note] A covetous hunks is also called a vinegar pisser, either because his urine does as it were serve him for vinegar, or because it is as hard for him to part with his money.
Jack Adams, his perpetual almanack 24: Let no King, Duke or Marquis piss vinegar when he hears his Children are born while they are posited in this house.
vinegar strokes (n.) (also gravy strokes) [? one ‘puts a bit of vinegar’ into them; note Barry Humphries, The Traveller’s Tool (1985) in ‘Les’s Large Appendix’: ‘The penultimate phase in sexual connection when the active partner experiences a facial rictus similar to that produced by drinking vinegar (information supplied by a doctor)’]

the final thrusts of sexual intercourse; used fig. of a train in cite 1960.

[UK]A. Burgess Right to an Answer (1978) 106: The pistons working up quickly to the vnegar strokes.
[UK]A. Burgess Enderby Outside in Complete Enderby (2002) 324: On the blackboard was now written Vinegar strokes through magnified sebacities.
[Aus]D. Ireland Glass Canoe (1982) 13: Just as he reached the vinegar stroke, Mick dated him.
[UK](con. WW2) T. Jones Heart of Oak [ebook] There we were, going at it like knives, and me just on the vinegar strokes when there was an almighty bang and clouds of smoke and dust and Leenee shouting out at the top of her voice.
[Aus]B. Humphries Traveller’s Tool 117: I was thirty thousand feet and eight inches up at the time and just as I was getting into the vinegar strokes, someone started hammering on the door.
[UK]Roger’s Profanisaurus in Viz 87 Dec. n.p.: vinegar strokes n. male The final, climactic stages of intercourse or masturbation. As in: ‘Would you believe it? The phone rang just as I was getting onto the vinegar strokes.’ From the similar facial expressions achieved when sipping vinegar.
[Aus]R.G. Barrett Goodoo Goodoo 128: Les would have liked to have lasted all night, but it was too good and he started to hit the vinegar strokes.
OnLine Dict. of Playground Sl. [Internet] gravy strokes n. the final part of sexual intercourse where the male ejaculates.
[UK]Ben ‘Bad Wank Day’ on FunnyDaze.co.uk [Internet] The vinegar strokes were kicking in. I could feel the much anticipated and all too familiar moment about to take full control of my pre orgasmic body. This was it, any moment now.
[UK]J.J. Connolly Viva La Madness 99: Dougie pumps away [...] starting to hit the vinegar strokes.