If there is one thing I have against some of our visitors from the north, it’s that they love to remind me (and everyone else in the city) that we don’t know the meaning of cold down here. This annoys me for two reasons. One, shut up, who cares about weather, don’t you have anything better to do than brag about temperature? And two, that’s not true. OK, it’s mostly true. Usually, I will admit, even our cold days down here ain’t that cold. But mostly true isn’t the same as always true. And what is always true is that at least a few times a year, we here in…