Green’s Dictionary of Slang

(Aus.) extremely drunk, unconscious; also from physical violence.

1926		N.E. Ensign (Benalla, Vic.) 29 Jan. 3/3: He saw four men talking [...] and asked them if they had seen Mr carey. They said, ‘Yes, he is at the back of the hall out to it’.
1930		Mercury (Hobart, Tas.) 30 Sept. 9/3: She [...] saw two men with the drunken man who was lying prone on the ground [...] one of them then said ‘He is out to it’.
1937		West. Australian (Perth) 24 Mar. 21/2: Brown was out to it and I poured some water over him which revived him a bit.
1941		Baker Popular Dict. Aus. Sl. 52: Out to it, dead drunk.
1944		Mirror (Perth) 4 Mar. 3: On a single bed, flat out to it, was their father, two empty metho bottles by his side.
1946		K. Tennant Lost Haven (1947) 171: He was properly out to it that night. We made speeches about how sorry we was to see him go.
1955		A.W. Upfield Cake in Hat Box 5: ‘Doc in town?’ asked Silas of the licensee. ‘Yes, but he’s inky-poo. Be out to it till morning.’.
1955		Centralian Advocate (Alice Springs, NT) 12 Feb. 7/2: Constable Smith found the defendant flat out to it lying face down on the path.
1988		McGill Dict. of Kiwi Sl. 80/1: out to it unconscious, often from too much alcohol.
1991		Bruce Stewart Broken Arse II v: (Henry yelling as the screws smash him up with their batons) whimple: Henry’s out to it. egg: The screws are still hoeing in, the bastards!
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].