Green’s Dictionary of Slang

pukacker n.

[ety. unknown]

(Aus.) a lazy, shiftless person.

[Aus]Bulletin (Sydney) 7 Apr. 14/4: A hunk of bush phraseology:– ‘Yes, ole Brown was a reg’lar ole coot, a right down pukacker. Yer could ring a tatt into him anytime. He rolled ’is marble in last year – too much nose-paint, yer know.’ Which all meant merely that Brown was shiftless and credulous and had died through excessive drinking.