Green’s Dictionary of Slang

(Aus. prison) a homosexual who takes the passive role in anal intercourse.

1972		Parramatta Jail Gloss. B. Moore (ed.) (2023) 49: Ballarat cat.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 19: Ballarat, passive male homosexual.
1990		Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Ballarat. Homosexual.
2001		Prison & Drug Sl.: NSW Corrective Services n.p.: Ballarat, homosexual, as in cat (rhyming slang).