poltergeezer, rare childish slang for an old man poltergeist, may not be citable even with Google standards though. 2 cites currently available. PseudoSkull (talk) 18:38, 23 November 2021 (UTC)
talk-page stalker, (WMF jargon) someone who regularly surveys a user's talk page PseudoSkull (talk) 18:28, 3 December 2021 (UTC)
maingain, gaintain “to eat at a light calorie surplus that allows for gaining muscle albeit slower than in a bulking phase and keep the bodyfat level” Fay Freak (talk) 03:45, 4 December 2021 (UTC)
Headless Horseman or headless horseman, appears to be Internet slang for several things having to do with the penis, like "uncircumsized penis" and "picture involving a blowjob with the penis not visible", none of which appear to be attested by our standards... PseudoSkull (talk) 20:14, 5 December 2021 (UTC)
backwards long jump, a glitch in the game Super Mario 64, one of the most well known glitches in 3D gaming history PseudoSkull (talk) 04:52, 6 December 2021 (UTC)
boneration – synonym of "boner" used for rhythmic effect in South Park, and I looked far and wide for other usage examples and only found one potential one. PseudoSkull (talk) 18:46, 17 December 2021 (UTC)
I'm not the one. RFV failed just recently. This definitely exists, even I as a non-native have heard it before. UD — Fytcha〈 T | L | C 〉 02:19, 19 December 2021 (UTC)
(video games)counterstrafe/counter-strafe: In multiple FPS games: Pressing the opposite movement key shortly to come to a full stop quicker (so that the weapon is accurate more quickly). — Fytcha〈 T | L | C 〉 15:21, 1 January 2022 (UTC)
(Found by a cool IP editor) Dol (the word has an entry with two internet-archived sources plus an old map; should be deleted under current requirements; it probably exists in the books out there, but it's nigh-on impossible to find with my skill set) Geographyinitiative (talk) 14:34, 8 February 2022 (UTC)
Banzhudang (three archived internet cites and only one OCLC; is listed in GEOnet and other databases) --Geographyinitiative (talk) 14:58, 20 February 2022 (UTC)
high on one's own farts - having deluded oneself, having lost oneself in one's delusions; seems citable using Twitter/Reddit etc. — Fytcha〈 T | L | C 〉 22:14, 13 July 2022 (UTC)
Indo - slang for Indonesia / Indonesian — Fytcha〈 T | L | C 〉 14:50, 8 November 2022 (UTC)
Blurmany - Germany with reference to its blurry Google StreetView coverage. Heavily used in the GeoGuessr community but the word also exists outside of that community: [1] — Fytcha〈 T | L | C 〉 14:27, 10 November 2022 (UTC)
Ergasmus: blend of Erasmus and Orgasmus; insinuating that Erasmus students are sexually very active. See also: [2] — Fytcha〈 T | L | C 〉 16:10, 11 August 2022 (UTC)