all those flushes , all that hand soap and shampoo and detergent and toilet paper and barroom vomit , all the coffee stains , bloodstains , and sweat stains , dirt from the cuffs of your pants and grime from the inside of your collar , the cold vegetables you scraped off the plate into the garbage disposal , cigarettes and urine and hard bristles of hair from legs , cheeks , groins , and chins it all met up with hundreds of thousands of similar or identical entities every night and poured , she assumed , through dank corridors fleeced by vermin and out into vast catacombs where it commingled in rushing water that rushed off towhere ?