The toilet’s flush produces a brief but traumatizing sound, a kind of held high-B gargle, as of some gastric disturbance on a cosmic scale. Along with this sound comes a concussive suction so awesomely powerful that it’s both scary and strangely comforting—your waste seems less removed than hurled from you, and hurled with a velocity that lets you feel as though the waste is going to end up someplace so far away from you that it will have become an abstraction… a kind of existential-level sewage treatment.