The idea of something unnatural coming out of the toilet or sewer. Like in some stories where black sludge or a strange creature emerges while someone is pooping. It plays on our fear of the filthy and the unexpected. It's a very visceral and disturbing image that can make a horror poop story really scary.
Contamination. If there's a problem with the RV poop system and it starts contaminating the living area of the RV. For example, if poop seeps into the carpets or bedding. It can make you feel like you're in a really unclean and dangerous situation. It's like being in a horror movie where the filth is taking over.
The unknown is the scariest. In 'as is horror stories', things are often left in their natural state, so you don't really know what's lurking in the shadows or what's causing those strange noises. It's that sense of not having all the answers that makes it terrifying.
Isolation is also a key element. When characters are alone in a spooky place, like an abandoned asylum in one of the stories. They have no one to turn to, and that makes the situation even more terrifying as the horror unfolds around them.
The unknown is one of the scariest elements. When things are not clearly defined, like a strange figure in the fog in some stories from '1001 horror stories', it makes our imagination run wild. We start to create the most terrifying scenarios in our minds.
The scariest element could be the sense of the unknown. For example, in many stories, there are strange noises or happenings that the characters can't explain. It's that not - knowing what is causing the fear that really gets to you.
The isolation in many of the stories is really scary. Like when a character is alone in an old, abandoned building, cut off from the outside world, and they start to feel like they're being watched by something malevolent. There's also the fear of the supernatural, such as ghosts or demons that defy the laws of nature. This makes the characters, and the readers, feel powerless against them.
I heard a story where a family moved into a new house. The bathroom always had a strange smell, like rotting something. Whenever they flushed the toilet, it would make a gurgling noise as if something was trying to come up. One day, the daughter was in the bathroom and she saw a black hand reaching out from the toilet bowl. She screamed and they never used that bathroom again.
One possible element could be public embarrassment. For example, a celebrity might accidentally pass gas in a very quiet and formal event, which could be mortifying. Another element could be health - related issues that lead to unexpected bowel movements. Like if a celebrity has food poisoning and can't control their digestive system at a public place.
The way people react in those situations. If someone is overly dramatic or tries to be so proper even when they are in a poop - related horror situation. Say a person is trying to hold their poop in while running to find a restroom and they have this really funny expression on their face. It makes the story hilarious.
One common element is the lack of access to a proper toilet. For example, in many stories, the girl is in a situation where the nearest restroom is too far away or locked.