Bonzer = beaut in my book! (Corno, it means good)
"She says I'm bonzer and I reckon she's goodo
"She's such a winner that I'd enter her in the local show
"My Mabel waits for me ..."
Sorry about that.
Here's an interesting site I stumbled upon after being interrogated my a German colleague about the meaning of a word in a book of Henry Lawson short stories I lent him -
http://www.anu.edu.au/ANDC/res/aus_words/aewords/index.php
As for the silly quote, and I think there may be aDad and Dave link -
http://www.songsets.net/music/756396.htm . Some words are different to the ones I remember.
Somewhere around here, I have a gorgeous recording of Peter Dawson singing an arrangement in 3/4.