It might be the worst thing ever. I mean peeing in the chlorinated pool may not be great, but there are so many other chemicals to clean its probably not a huge deal and its very diluted. However, brushing your teeth while in the bath and rinsing and spitting right back into the water you are bathing in is just crazy. I mean who thinks that is even an option? And its not like she is trying to save water, she's in the bath again now and just letting it run with the drain open. Maybe she has to take a shit and she likes to pretend she is a dolphin?