Green’s Dictionary of Slang

rim v.

[ream v.]

1. to cheat, to swindle.

[US]J.T. Farrell ‘Big Jeff’ in Short Stories (1937) 50: Big Jeff . . . gyping . . . pimping . . . rimming.
[US]J.T. Farrell ‘Wedding Bells Will Ring’ in Short Stories (1937) 203: ‘How does that Silver toothpaste go here?’ ‘Lousy. I got five left out of the half dozen you rimmed me into taking.’.
[US]Monteleone Criminal Sl. (rev. edn).

2. (usu. gay) to stimulate the anus with the lips and tongue; thus rimming, the action of this licking [var. ream (out) under ream v./SE ream, to stretch, to scrape out].

[US]‘Swasarnt Nerf’ et al. Gay Girl’s Guide 14: rim: To lick one’s partner’s anal opening as the extreme expression of love, adoration or masochism.
[US]W. Burroughs Naked Lunch (1968) 101: Suppose it was your mother, rimmed by resident leaches.
[UK]Auden ‘The Platonic Blow’ in Mills (1983) 324: ‘Shall I rim you,’ I whispered.
[US]San Diego Sailor 61: I [...] let my tongue run over and under his balls, until I’d worked down far enough to rim him.
S. Kimball She Never Says No 🌐 From time to time, he would take his tongue out of her cunt hole and tweak her clit with his tongue. ‘Oh, that cream-cheese pussy,’ he sighed. ‘I have to rim your ass,’ he said, as he stopped muffing her.
[US]K. Vacha Quiet Fire 45: We fucked, we sucked, I don’t think we rimmed.
[US]‘Victoria Parker’ Pay for Play Cheerleaders 🌐 He spiked his tongue into her asshole [...] rimming her with professional perfection, as if she’d sat down on a high-speed drill. The tingle vibrated through her and sent the pretty schoolgirl into a realm of pure pleasure.
[Scot]I. Welsh Trainspotting 228: We’d throttle the life oot ay each other fir the privilege ay rimmin some English aristocrat’s piles.
[UK]Guardian 24 Feb. 3: Nathan doesn’t even know what ‘rimming’ is yet.
[UK]Guardian Weekend 21 Aug. 5: I was caught by all my friends and family rimming the vicar in the vestry. I’m joking – we were just kissing.
[UK]Guardian G2 1 May 22: There were no scenes of underage rimming in last night’s episode.
[US]E. White My Lives 237: The only position T feared with me was being rimmed.
[Scot](con. 1980s) I. Welsh Skagboys 253: If ah’d bin rimmin the fucker aw night thaire couldnae be a worse taste in ma mooth.
‘Chelsea G. Summers’ in Vice 10 June 🌐 My tongue, flat as a trowel, cleaved to his asshole. In the parlance of the time, I ‘rimmed’ him, and he liked it.

In compounds

rim job (n.) (also rimming job) [job n.2 (2)]

an act of anilingus.

[US]San Diego Sailor 61: When I started getting my tongue in, he opened up for it [...] He liked my rimming job all right.
[US]E.E. Landy Underground Dict. (1972) 160: ream job [...] Oral copulation of the anus with stimulation by the tongue. [Ibid.] 161: rim job.
[US]‘Victoria Parker’ Wet Dream Schoolgirl chap. iii: Dave shot his tongue at her asshole, twirling it wildly against her tight assbud [...] ‘Have you never had a rim-job, darling?’.
[US]Alt. Eng. Dict. 🌐 rim job (n.) the act of ‘rimming’ – licking someone’s anus.
[US]T. Parker South Park: Bigger, Longer and Uncut [film script] sheila: What the heck is a ‘rim job’? liane: Oh, why that’s when you put your legs behind your head and have someone lick your ass.
E. Hagelstein ‘Neighbor’s Dog’ in ThugLit Aug. [ebook] ‘Haven’t you ever given a rim job?’.
Twitter 29 Jan. 🌐 Nice to see this bacon-faced, Hitlery tosser [i.e. N. Farage] being absolutely fucking destroyed by a journalist worthy of the title instead of being given an on-air rimjob by some fucking BBC lickspittle.
[UK]P. Baker Fabulosa 297/1: rim anilingus.
rim queen (n.) [-queen sfx (2)]

a homosexual who enjoys anilingus.

[US]J.P. Stanley ‘Homosexual Sl.’ in AS XLV:1/2 53: The most popular compound formation involves some nouns plus queen [...] size queen, rim queen, tearoom queen.
[US]B. Rodgers Queens’ Vernacular 172: rim queen an ass-licker in all meanings and shades of the word.
[SA]K. Cage Gayle 91/2: rim adj. rim queen, man who enjoys rimming as part of his sexual activity (also known as a rim job) [American Gayspeak].