The Best and Worst restrooms in San Francisco. Take the Taqueria Can-Cun (2288 Mission at 19th Street), for instance:

"This is not a bathroom, people; it's a dungeon. The walls are of primitive stone and mortar, and there's a black wrought-iron grate covering what might have been a window in another century. The room is filled with junk: cardboard boxes, a mop sitting in toxic mop water, and a black plastic bag covering a large object we assume is a dead body. There's menacing graffiti, a puddle of urine, and God knows what else splattered on the floor.