I have only used it in the same way someone may say "bloody poms" for example. So perhaps pom is also racist. I had never ever heard of the c word being used here but I did find it weird being British by birth that the cheese was called that. Most people here would have no clue. I probably agree with you in regards to the film though. However I now have a near neighbor who has decided to call the substantial ( and beautiful) garden near his house " black mans gully" ( I kid you not) he is obviously a 65+ year old white Australian male Queenslander. His choice I guess but probably not the best choice. And people wonder why Australians are accused of casual racism a lot.