Old cable cars that go up the side of Mt Washington
Since Seattleites live for gloriously sunny weather, this phrase typically is used to emphasize just HOW nice the weather was on any given day. It refers to clear blue skies--so clear, in fact, that you can see Mt. Rainer. Example: "Wasn't the weather amazing yesterday? The mountain was even out!".
The Ill Mill is a nickname for Milwaukee used by the younger crowd. It's more often used in an endearing way than a derogatory one.
Literally, "Is it not so?", a slurring of "ain't it, hey?". May be used after a statement of fact when one expects a response, reply, or nod of acknowledgement. Ex: "Dem Brewers is doin' good dis year, aina hey?".
Yankee fans wouldn't shut up about a curse that prevented the Red Sox from winning the World Series since 1918. That is, until the Red Sox won in 2004 to dispel such a myth.