Last night I had dinner with a friend at a neighborhood restaurant, and the San Francisco twins were there. They sat in the window, and we sat right behind them. They managed to polish off a bottle of wine, and got pretty drunk. They were arguing about something at one point, and one turned her back on the other slurring, "I don't even want to hear it. I don't want to hear it." At another point, the same one (Marian or Vivian, I just don't know) kept standing up and pointing at a spot on the glass of the window. It was like a tiny scratch, and she kept saying to her sister, "You don't see that? How can you not see that??"
It was awesome.
Then today I found this site that says they eat at that restaurant (The Nob Hill Cafe) every Tuesday and Friday night. So, if you ever want an authentic San Francisco dining experience, I recommend checking it out.