What’s the difference what she’s doing if it’s Margot Robbie? As it happens, she’s teaching Aussie Slang and btw the word shown on the screen is a very dirty word. And although I came to Oz as an adult, many many years ago, I knew all the words and phrases, even more of them than she did. All are everyday terms, really used in conversation, even the one on the screen.
And while you’re here, let me mention that you should go see Once Upon a Time…In Hollywood. A worthy film, and notable since Margot is in it and she is the most beautiful woman in the world, aside from my wife, of course.