The cockroach in the maid's room
A comfortable sculptor enters her departed maid's room expecting filth. She finds it bare and white, with a charcoal drawing on the wall of a man, a woman, and a dog. She crushes a cockroach in the wardrobe door, watches the white paste ooze from it, and finally puts it in her mouth. The small domestic act undoes her whole identity, showing how a trivial, disgusting encounter can open onto a total metaphysical crisis.