Green’s Dictionary of Slang

(Aus.) the female breasts.

1967		J. Hibberd White with Wire Wheels (1973) 161: I’ll never forget those nungers, and their red jelly-bean nipples.
2002		nakedstars.com.au 🌐 Beaut Brunette Sheila Flashes Her magnificent Big Tits — Cute Little Map of Tassie but those Nungers, wow!