Jen looked down at her dirty ass and legs and asks Susan if she can get cleaned. Susan replies with "your body naturally repels your own pee and poop, so when you poop any remaining on your butt gets repelled off." As if to prove her point, Jen feels herself crap on the floor again, but does not feel any left on her ass.
Jen and Susan get to home room on time and sit down. Jen pees again, creating a puddle in the seat, but does not feel it on her legs. Putting her hand in it proves that the urine is unable to touch her skin.
Susan leans over to Jen and says "you've been peeing at least twice every five minutes!"
Jen is dimly aware that the urine puddle she was sitting in was growing and soon flowing over the chair and onto the floor. Home room ended with one chair coated in and surrounded by a lake of piss and a pile of crap on top.