I had nightmares as a child that a snake or crocodile would come up through the toilet and bite my ass. Actually I'm pretty sure I was still afraid of that as a young adult. At least when I was drunk. These days we should all probably be afraid of tiny little cameras, but that's a topic for another day.
Apparently I should have been afraid of plastic fish and octopus combs. Thank you Cha-Cha, but this is not just a small bathtub. At least he didn't try to flush them. And I found them before the 3am-in-the-dark piss.