That's right, San Franciscans. December is here, the cold has set in, and the wet is beginning to arrive, nary to depart again until March or thereabouts. This isn't all bad: There will be green fields outside the city, and some pretty sweet wildflowers in the hills of Marin come spring. But in case you're not looking forward to long, soaked waits for Muni, inoculate yourself against the travails of Northern California's dark, wet winter by checking out this video. Let us know if it works.