fat: doesn't sound strange at all. like the chargers, they're our team as long as they're winning…
Some cultural things. One thing to watch out for is if your spouse and her relatives talk a lot about "money". It's an indication of how tight the family financial knot is.
Example: when my in-laws our her, they always refer to my wife and I's house as "our" house (meaning me, wife,wife-'s inlaw). When a stock is making money it's also "our" stock. A sucker stock is "my stock" though. It's really irritating. My parents (god bless them) have been westernized thankfully and don't do this.