when i was young, i had read a scary story about two women swimming in a river, and one of them was grabbed at the ankle and pulled underwater. when she got out, she had a green palm print on her leg caused by a "frogman." for a long time after reading this story, i was afraid of not just rivers and lakes, but my own shower and toilet. i would avoid standing near the drain in the shower for fear of the frogman leaving behind a green imprint on the bottom of my feet. i can't begin to describe the caution used when on the toilet.
A childhood belief about monsters

others believed things like this
- I used to believe that if I flushed the toilet before I showered, I would take a shower in dirty toilet water.— Chris D
- I used to be afraid that "boney Legs", a witch from a story Lived in the toilet. Anon
- in this TV show i saw a snake coming up from the drain so everytime i take a shower i go really fast!— scared person
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather
- I used to believe that take a shower meant to go steal a shower from the storeAnon
- I used to think that toilets led to the shower head. That's why I never took a shower :D— scared