hmmm, i was thinking the same thing, hoping actually, but when I went in there to check if the water stirs, it doesn't. Not that I know a lot about toilet mechanics, but maybe it does sometimes?
what if it is or was a parasite? Perhaps its gone now? I have Black-Walnut tincture in the cupboard and I heard that its good for parasites. What do you think? Before or after a liver flush?