I'm in Australia and we have regional differences for things which causes confusion at times.. it's a big country! Things such as bathers/swimmers/cossies (I think shortened from bathing costume?), luggage/port (from portmanteau I think, this is used in Queensland), milk bar/deli (deli is used in Adelaide to mean a corner store that sells misc general items, where that is called a milk bar in Victoria.. Idk what they call their actual deli's in Adelaide though, I'll have to check with my cousins). There are lots of differences like these, which keeps life interesting.
As for slang, I live in suburban Melbourne, I don't encounter much of that "ocker" talk. Though it is usually very confusing and hilarious when I do! I'm frequently taken to be a foreigner or a migrant from my accent, which is considered quite british (mum is from a family of choral singers; it influenced how they talk, and we inherited that without the church and singing stuff). So random people tend to use words they assume I'll know, which means I'm much less likely to hear those ockerisms.. a win/win for me!
My partner grew up in the country and his family are all from rural areas, as well as being police officers in the bush for a few generations.. they are the most ocker people I know, though most now live in remote parts of Queensland so that's to be expected really. My guy can understand all that, as he grew up with it, but he doesn't really use it. He sounds more Australian than I do, but that's really not hard.
"Being a suck" is an expression here, too, for the same thing.
