One of the many Pennsylvania Dutch expressions in use here in Berks County is "the root beer [or whatever] is all." This means, of course, that the root beer is all GONE, but we just don't bother with the last word.
We get all kinds of flack from non-PA Dutchies over this-- my brother has had to endure countless talkings-to from his fiancée, a New Jersey native.
I have to admit that this expression never struck me as incorrect or odd until Vicki (aforementioned fiancée) pointed it out. It was just something we said, and everyone understood it.