quicko: (pro)nouns

It's taken me nearly a year, but I've finally figured it out: Australians use the pronouns "yours" and "mine" as nouns. Not always, but in one particular context: places of residence. As in, "if you're in town, you can stay over at mine." It'd always take me a second to process and figure out "your what?" because, of course, mine sounds like a possessive pronoun that needs a noun to follow it. But that's just it: it's being used as the object in the at- prepositional phrase, and thus as a noun in its own rite.

I slept so much easier last night.