NF It is indeed educational. I always thought nonce was like "nong" in Australia, someone who's not very bright. I didn't realise that it had a very specific and very negative definition.
We say Nong in the UK too.
As a teen I learnt the term "Drongo" which was a very popular term in London at the time, the Ozzie's brought over with them. They used it to mean a sort of lazy idiot...it was a rather snobby term, really, though. The real meaning (I'm told) is from Sheep shearing stations and is a piece of poo in the wool?? That got imbedded on the woman shearers boobs?!!😝😂 Is that so?