FTDK, yeah mate I do agree, it would be 'un-Australian' not to punctuate the conversation with a few f*cking expletives, I don't mind that at all. When its done as a put down I get pissed off. The examples you gave would be no problem to me at all, however if he said, "Hold it off you f*cking idiot" I'd see red.
I suspect that some instructors forget that once they too were green wannabes that didn't always get it right.