Green’s Dictionary of Slang

(Aus.) to be hard to please.

1919		W.H. Downing Digger Dialects 39: port-holes in your coffin (to want, etc.) — To be hard to please.
1924		(con. WWI) A.G. Pretty Gloss. Sl. [...] in the A.I.F. 1921–1924 (rev. t/s) n.p.: port holes in your coffin – want. To be hard to please.

(orig. US) a ritual request that may well herald a fight, but still gives the other person the chance to back down.

1944		L. Glassop We Were the Rats 144: ‘Who said that?’ said Eddie, sitting up. He thought it was Jim. It was Jim, but Pat said, ‘Me. Want to make something of it?’.
1962		B. Veeck Veeck — as in Wreck 190: [J]ust sharply enough to let Clint know he was ready for him any time Clint wanted to make something of it.
1984		Partridge DSUE (8th edn) 1307/2: since ca. 1925.
1994		Penguin Bk of Aus. Jokes 387: I’m stupid, okay. I’ve got an IQ of 63. You wanna make something of it?