Green’s Dictionary of Slang

(Aus.) W.A. equivalent of bogan n. (1)

2003		Aus. Word map 🌐 bog a bogan, especially a really rough one. Compare bevan, bogan, chigger, booner, boonie, feral, westie.
2003		Aus. Word map 🌐 In Western Australia - Perth region [the word "bogan"] came into use more recently, and earlier the word ‘bog’ was used to mean pretty much the same thing.