Green’s Dictionary of Slang

(Aus. teen) a general insult.

1999

(ref. to late 1970s) G. Seal Lingo 104: The following general terms of insult were in common use among [...] Sydney schoolgirls in the late 1970s: trog, dapto, mang, poonce (continuing an earlier usage) and nerd, the last being still in use with this age group.