Well, it could be that the kid is not used to such intense or spooky content. Maybe they've been protected from scary things before and this is their first real encounter with a truly frightening story. Also, the way the story is told can play a big role. If it's told with a lot of drama and suspense, it can easily make a vine kid scream.
The kid might scream because they are identifying too closely with the characters in the scary story. If the characters are in a dangerous or terrifying situation, the kid might feel as if they are in that situation too. Plus, kids are generally more sensitive to fear than adults. Their emotional responses are often more immediate and intense, so a scary story can easily trigger a scream.
One reason could be that the kid has a vivid imagination. Scary stories often paint pictures in the mind, and a child's imagination can run wild, making them feel truly frightened and scream. Another reason might be that the kid is in an environment that enhances the scariness. For example, if it's a dark room or they are alone while listening to the story.
Maybe the story has really terrifying elements like spooky monsters or sudden scares that made the kid scream.
One can hug the kid and offer gentle reassurance that it's just a story.
You can start by hugging the kid. Physical comfort can make them feel safe immediately. Then, you can talk to them in a calm voice, telling them that it's just a story and not real.
There might be some sort of misunderstanding or prank in the story. For example, someone told the kid that Santa isn't real as a joke, and the kid is so distraught that they start screaming. Christmas is often a time of high emotions, and for a child, something like that could be very upsetting.
Perhaps tell the kid an engaging Christmas story. For example, about Santa Claus coming to town. This could capture their attention and make them forget whatever was making them scream. It gives them something positive and exciting to focus on instead of whatever was bothering them.
Their vivid imagination is another factor. Kids have very active imaginations and their stories can jump from one idea to another because in their minds, all these ideas are connected in some magical way. They might start with a story about a cat and then suddenly start talking about a spaceship because in their fantasy world, the cat might be on a spaceship adventure.
Maybe the kid is too excited about something that happened during the day. Or, they could be scared of the dark or have had too much caffeine.
One reason could be that the kid is very active. When they run around a lot, their feet sweat, and this makes the socks smelly.
Surprise can also lead to screaming. Imagine a wife coming home to find a surprise party that she wasn't expecting at all. The shock of seeing all those people suddenly can make her scream. Also, pain can be a cause. If she accidentally stubs her toe really hard on a piece of furniture, she'll likely scream out in pain.
Well, in this Vine story of a kid hitting a girl with a backpack, there could be social consequences too. The other kids might start to avoid the kid who did the hitting. As for the girl, she could be physically hurt and might be scared to be around the kid in the future. And if there were witnesses, they could spread the word, which might affect the kid's reputation among his peers.