There might be a fanfiction where a sneeze is a sign of a hidden curse in the Supernatural world. For instance, Dean discovers that every time he sneezes near a certain type of supernatural relic, it starts to glow and attract otherworldly creatures. This could lead to a whole adventure of trying to break the curse. And there could also be fanfictions where a new character's sneeze is the first sign of their latent supernatural abilities, which then unfolds into a story about them joining the Winchesters in their hunts.
One good example could be a story where a character in the Supernatural universe has a sneeze that triggers some sort of magical event. Maybe Sam Winchester sneezes and it accidentally releases a minor demon that was trapped in a nearby object. Another could be where Castiel's sneeze causes a glitch in his angelic powers for a short time, leading to some comical or interesting situations in the story.
One common theme could be the relationship between the reader and the main characters. For example, the concern or reaction of Sam and Dean Winchester when the reader sneezes, which might show their protective or caring side.
One good example could be a fanfiction where Lucifer is crying over his fall from grace. It might explore his complex emotions of regret and anger. Another could be a story where he cries due to the actions of the Winchester brothers, perhaps feeling betrayed or outsmarted by them.
Some fanfictions in this category might involve Castiel dealing with the physical changes in a unique way, given his angelic nature. He could be both confused and curious about what is happening to his vessel. These stories often play with the idea of how the Supernatural world's rules interact with this very human - like situation of pregnancy.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3). Just use the keywords'supernatural','reader', and'sneeze' in the search bar, and it might lead you to relevant fanfictions.
There could be a story where an angel has some of Naruto's chakra infused into it accidentally. This gives the angel some new and strange abilities that are a mix of angelic powers and Naruto's ninja abilities. They then have to figure out how to control these powers together while also dealing with the threats that come from both the Naruto universe and the Supernatural realm.
One good example could be a fanfiction where a girl uses a special pen (assuming the 'pen8s' is some sort of unique pen in the story) to write down prophecies related to the Supernatural world. Maybe she discovers that her pen has the power to predict the actions of demons and angels, and she uses this knowledge to help the Winchester brothers in their hunts.
First, you need to understand the Supernatural universe well. Know the characters, their personalities, and the rules of the supernatural world in the show. Then, think about how a sneeze can fit into this world. It could be a plot device, like I mentioned before, a sign of something supernatural. For example, you could start with a character like Jack sneezing and it being the first sign of a new power he's developing. Next, build a story around this idea. Maybe it attracts the wrong kind of attention from other supernatural beings, and the Winchesters have to protect him while also trying to figure out what's going on with his new power.
Fanfiction in general is written by fans of a certain work, like a book, movie, or TV show. In the case of male sneeze fanfiction, it focuses on male characters sneezing. It might seem a bit odd, but some people find it fascinating. For example, in a superhero fanfiction, a male superhero might sneeze due to some strange pollen in a fictional city, and this could lead to an unexpected adventure or a moment of weakness that other characters have to deal with.
In many Supernatural fanfictions, the idea of Harry Potter being a hunter is quite interesting. His magical abilities give him an edge in the world full of demons, ghosts, and other supernatural entities. He could use spells like the Patronus charm to fend off dementors - like creatures in the Supernatural universe. Also, his experience in the wizarding world with dark magic could help him understand and combat the dark forces in the Supernatural world more effectively.
One of the best sneeze stories I've heard was about a man who sneezed so hard during a meeting that he accidentally sent his papers flying all over the place. Everyone in the room was startled at first, but then they all burst into laughter. It was quite a comical sight.