Guy: "Oh my god is this coke from Burger King"
Same Guy: *sips the drink and then realizes what it is*
That same guy:"Oh what is that? That's carbonated poop water."
A diarrhea in which the feces is so liquified that it has all the properties, save color, of water. It flows so quickly and uncontrollably that it is hardly noticeable when leaving the anus, and may look like urine once in the toilet.
Oh God, I think I ate too much of those buffalo wings. I can't control it anymore. It's so wet, I think it's waterpoo!