From the sheet music at The National Library of Australia:

WHAT D'YER THINK OF THAT? (MY OLD MAN'S A DUSTMAN)
Written and Composed by J. P. Long
"Featured and sung with great success by Joe Brennan in J. C. Williamson's pantomime 'Forty Thieves'"
Melbourne: E.W. Cole, c1922.
"Published by arrangement with the Lawrence Wright Music Co., London."

1. I've married a man of position. I've married a man of great wealth.
He works very hard for his living, and it isn't too good for his health.
I think his good job will continue. Well, that's what I fervently trust.
He's rapidly making his fortune. Yes, he's covered all over with dust.

CHORUS: My old man's a dustman. What d'yer think of that?
What d'yer think of that? What d'yer think of that?
He wears a dustman's trousers, he wears a dustman's hat,
And he talks a dustman's language. What d'yer think of that?
OPTIONAL: When they only paid him thirty bob a week,
He called me his little turtledove;
But since they've raised his salary to four pounds ten,
He throws his rubbish where he throws his love!

2. He used to have beer for his breakfast, but now he wants nothing but "fizz."
So I give him a Seidlitz powder, and then I leaves things as they is.
I'm getting quite jealous of Herbert. The ladies admire him, I know;
And the way that he picks up a dustbin, oh, it does show his figure off so!

3. You'll notice this dress that I'm wearing: it's sent all my friends up the pole.
He got it for me on my birthday from Robinson Peter's "dusthole."
Our rag-and-bone man said this morning the material's "cheepy de shin."
I fancy it's "sackcloth and ashes" by the way that it scratches my skin.