These are informal Australian English expressions as well, not some sort of weird language. They are just LAZY to speak a whole.
Take the beginning words in the post 4 eg:
Arvo: 下午 Evo晚上 SHUASH ---SHUT UP Cheers: 谢谢
Barbie:BBQ SOCCEROOS- 澳洲国家足球队 bloke:man,guy
chick:年轻女孩 bush:乡下 ,Red neck :乡下人
arvo=arv-o---arf(tern)oo(n)
Evo=E(vening), o goes against ar(vo)in form
SHUASH= shu(t up+ hu)sh
Barbie=BarBieQue
SOCCEROOS= SOCCER+ (Kanga)roo(represents Australia)
Red neck=farmers with strong sunshine, become "red neck" as a distinct feature of Whites