Eventually, they got large enough that their weight would depress the plug.
Can you see where this is going?
Yeah. On the list of "stuff not allowed before coffee" THAT is right under "diaper blowouts" and "vomit."
It turns out, the cat laid in the sink and pushed the plug....and then stood up and bumped the faucet handle.
So, the water ran.
All. Night. Long.
Did I mention this was the second floor?
All because my stupid cats slept in the stupid sink.
The only silver lining was their bathroom was above the garage so most of the damage was in there and could be fixed gradually. No electronics or anything were beneath it.
I think it took my husband a solid year to forgive them. He still gets irritated when you bring it up.
So that's the story of how my cats flooded part of my house!