It’s the only way to be sure. (NSFW photos at link)
This is being (humorously) referred to as a follow-on to Sarah Palin’s Alaska. I’ll admit that there’s some humor there, just because of the juxtaposition of values and representatives. There’s a point, though, at which something goes from “disturbing and uncomfortable” to “absolutely wrong.” San Francisco is already partially into the second zone, and apparently moving further into it all the time.