It could potentially mean that in some fan - created stories (fanfiction) related to Harry Potter, there are scenarios that make one feel disgusted or 'want to throw up'. Maybe it refers to really bad or out - of - character interpretations in the fan - made stories.
No. It's not a common phrase. Most Harry Potter fans talk about positive aspects of fanfiction like interesting plot twists, new character developments, or how it expands the wizarding world. This phrase is rather strange and negative - sounding, so it's not likely to be used often.
Well, one reason could be that he was poisoned. In the world of Harry Potter, there are many poisonous substances. A fanfic writer might create a scenario where Harry is unknowingly poisoned, and this causes him to throw up blood as his body tries to fight off the toxin. Another possibility is that he has some sort of internal injury from a fight. If he got hit by a powerful spell or a physical attack during a battle, it could lead to internal bleeding which results in throwing up blood.
There could be various reasons. For instance, motion sickness if a student has to travel a long distance on a school bus with a bumpy ride. Also, if a student has a pre - existing medical condition like migraines, it can sometimes cause vomiting. In addition, the smell in the school, such as from a science experiment gone wrong or a musty old classroom, might trigger the gag reflex in some students and lead to throwing up.
No. The original Harry Potter stories have a certain charm and innocence in their themes. A fanfiction with such a concept as 'knocked up' would likely involve adult - like situations that go against the family - friendly nature of the series. It could also be seen as disrespectful to the original story and its intended audience.
It could be a new dark wizard. There are always new threats emerging in the fanfiction world. This new dark wizard might have a vendetta against Harry and uses a special spell or potion to make him cough up blood.
Another possibility is that Harry ends up married to a Muggle he meets in Vegas. This would be really interesting as he has to navigate the differences between the wizarding world and the Muggle world while being married to someone who has no idea about magic at first. It would be a story of discovery and adjustment for both Harry and his new spouse.