Green’s Dictionary of Slang

lubricated adj.

also lubed
[lubricate v. (3)]

(orig. US) drunk.

[US]L. Axley ‘‘Drunk’ Again’ in AS IV:6 440: lubricated.
[US]A. Hardin ‘Volstead English’ in AS VII:2 88: Terms referring to the state of intoxication: [...] Verbs: Lubricated.
[US]B. Cerf Anything For a Laugh 83: At a stag dinner in the Lambs Club a group of well lubricated convivials were startled by the sudden entrance of a weird character.
[US]Wentworth & Flexner DAS.
[US]J. Ellroy Because the Night 203: ‘He buys me drinks up the ying yang, gets me righteously lubed, then splits’.
[US]Eble Campus Sl. Apr.
[Aus](con. 1960s-70s) T. Taylor Top Fellas 9/2: Old blokes staggered over (they were always pretty well lubricated).
[US]C. Carr Our Town 269: Stubbs, well lubricated with beer [...] launched into a diatribe about religion.
[Aus]N. Cummins Adventures of the Honey Badger [ebook] Following the main race, the barbie fired up and people became lubricated.
[US](con. 1962) J. Ellroy Enchanters 201: They were lubed. The Losers [Club] served triple shots.