My daughter didn’t check the toilet after she flushed it right before bed. It was in a back bedroom that nobody else really goes to. It ended up flooding overnight and I didn’t discover it til the next morning, when I found my kitchen flooding from the ceiling. It apparently wasn’t from poop though as I didn’t see any fecal matter around (unless it was in the ceiling that got torn out). Whole kitchen ceiling got torn out, along with the floor of the bathroom. Not a huge amount of damage, but the most the house has sustained… so far.