Super Secret Squirrel*
So, there my sister and brother-in-law sat, minding their own business on the couch. And then, something squirrely ran across the living room floor. It was, in fact, a squirrel.
Blake hopped up and opened the back door, and the squirrel scampered out.
I'd give anything to have seen my sister's reaction.
Then, they realized that the floor was kinda wet where the squirrel had been. Fearing it had an accident out of, well, fear, my sis and Blake finalized their previously-tentative plans to have the carpet cleaned next week.
Then, they realized that the floor was kinda wet all the way down the hall. And into their bedroom. And into their bathroom. And right in front of the toilet.
"Did he sneak in the front door earlier?"
"Is he living in our garage?"
"...and why did he jump into the toilet?"
"Wait, no. He came OUT of the toilet."
Apparently, there's an uncovered plumbing vent on the roof. Imagine the squirrel's surprise...
It's not as rare as you might think.
I'm never using their toilets again.
*a multi-use phrase from The Berry Street Handbook of Neighborhood-Related Jokes