Green’s Dictionary of Slang

1. (Aus.) newspaper.

1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 10: He had read in the Johnny Raper that Balmain had been taken over by the mega-trendies and the would-be-if-they-could-be brigades.
2002		Pete’s Aussie Sl. Home Page 🌐 Johnny Raper, a Johnny: newspaper.

2. (Aus. prison) a cigarette paper.

1990

Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Johnny Raper. 1. Rhyming slang for cigarette paper. Prisoners are issued with tobacco and papers. Raper was a famous rugby league player.

3. (Aus. prison) a caper, a criminal exploit.

1990

Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Johnny Raper. 2. Illicit activity. Rhyming slang for caper.