This is what happens when your kids are in the bathroom alone, which previously has not been a problem, and one of them decides to launch a toy boat just as the other is flushing. At least the plumber was able to remove the boat from the toilet, so we don't have to buy a new toilet (which, in the landlord's preferred color, is $$$), but we will have been two nights without an upstairs bathroom, and damnit, getting up and having to walk downstairs in the middle of the night to pee is a first-world discomfort I'd rather do without.