Green’s Dictionary of Slang

saturated adj.

very drunk.

1825		Australian (Sydney) 22 Dec. 4/2: The glass being emptied , ti must of course be replenished [...] and so they went on [...] until they were pretty well saturated.
1883		Nat. Police Gaz. (NY) 20 Oct. 11/1: ‘Come boys, let’s get saturated,’ they got saturated and Dan wound up in the cooler.
1899		Ade Fables in Sl. (1902) 120: About Ten Days after they were Married he came Home at 4 a.m. in a Sea-Going Hack and he was Saturated.
1906		Gadfly (Adelaide) 4 July 20/1: The door opened and disclosed Barnes, who, to Johnson’s experienced eye, was plainly saturated.
1912		Ade Knocking the Neighbors 138: They had covertly planned to get him Saturated to the Eye-Balls.
1927		‘Sl. Expressions for Drunk’ in New Republic in AS XVI:1 (1941) 70/1: [...] saturated.
1931		(con. 1831) Sydney Morn. Herald 18 Apr. 56: Some of these women were so saturated with rum when they lit their pipes [...] a thin blue flame of fire used to come from their lips.
1935		C.G. Finney Circus of Dr Lao 85: Pleasantly saturated [...] Larry Kamper and his companion sat at the bar conversing.
1944		P. Kendall Dict. Service Sl. n.p.: He might have been a little [...] saturated [...] but he certainly wasn’t drunk.
1996		Eble Sl. and Sociability 45: Among the synonyms for drunk are [...] saturated, slammed, smashed, totaled out.