Green’s Dictionary of Slang

righteous n.

[joc. mispron.]

(Aus.) riotous behaviour; also as adj.

[Aus]Bulletin (Sydney) 29 Sept. 14/1: Another time Jacky was ‘up’ for drunkenness and ‘righteous,’ and the P.M. gave him a week.
[Aus]Bulletin (Sydney) 26 Nov. 44/2: [A] passin’ cop lumbers me for righteous behavior.
[Aus]V. Marshall World of Living Dead (1969) 83: Three charges agin’ me—righteous, vag, an’ resistin’.