You know how we are about fan theories. Some are disturbing (a la Doug), some actually make a lot of sense when it comes down to it (a la Pokemon) and some are so shocking they'll blow. Your. Mind. (a la Toy Story). Then there are the fan theories for Harry Potter… Honestly, guys, they're so riddikulus, you won't believe they're actually Sirius. (You know you love the puns.)
1. Harry Potter is immortal. "What if 'The Boy Who Lived' meant that Harry and Voldemort could only be killed by the other? So once Harry killed Voldemort, there was no way for the boy with the scar to ever die. He would live forever, thus never seeing all of his passed loved ones. That's just sad."—Hypable
2. The fantasy world of Hogwarts and magic is all in Harry's head. "Just when the abuse and neglect are getting to be too much, Harry Potter is saved by a giant man on a magical flying motorcycle. This man takes Harry away to a place where he is wealthy, has tons of friends and can make snakes burst forth from the anus of any soul who dares to cross him. Oh, he's also the best Quidditch player ever and a magician the likes of which are only seen performing levitation tricks on the streets of Las Vegas. A lucky break for a kid who needed one desperately?"—Cracked
3. Ron Weasley is a time-traveling Albus Dumbledore. "It is based on Dumbledore's constant knowledge of what they are doing, similar noses, scars on the same knee, and a passion for chocolate frog cards. In essence, the theory suggested that they were the same person, travelling back in time."—Reddit
4. Harry Potter and Hermione Granger are long-lost siblings. The Sibling Theory is in-SANE (and detailed). Read here.
5. Sirius Black and Remus Lupin are in love. Do you know how many shippers there are out there? So. Much. Fan-fic. Read more here.
6. Dumbledore turned gay after witnessing a sex crime against his sister. "I think Dumbledore might have turned gay because of his sister. Maybe after seeing the pain and distress that Ariana went through, he got afraid of hurting a woman the way the Muggles hurt his sister. And eventually, he became gay."—Good Reads
7. Harry Potter's a metaphor for 9/11. Apparently there are "eerie links" from the series to Osama bin Laden. What the actual f***? More here.
8. Neville Longbottom was The Chosen One. "As the prophecy goes, 'The one with the power to vanquish the Dark Lord approaches,' which we all assume is Harry, but who knows? It continues that this one is 'Born to those who have thrice defied him, born as the seventh month dies;' Neville was born on July 30th, and his parents stood against Voldemort, before being tortured for insanity. And 'He will have power the Dark Lord knows not?' While everyone believes that's a reference to the fact Harry embraces love and Voldemort doesn't, perhaps the power could be herbology, something that Neville excels at; You Know Who isn't exactly known for being green-fingered."—What Culture
9. McGonagall's a traitor. "There are those out there that believe that Minerva McGonagall was a traitor to Dumbledore, a Death Eater and purely evil. She's there at Privet Drive before the others: what was she doing? She encourages Quidditch, which divides the school, doesn't favor her house all that often, and buys Harry the broomstick that Quirrell enchants. She doesn't ever suspect Quirrell, she's livid with the students for finding the troll, and perhaps most tellingly, she doesn't agree with celebrating when Voldemort falls (the first time around)."—What Culture
10. The books are J.K. Rowling's Horcruxes. "J.K. Rowling created seven Horcruxes. She put a part of her soul in every book and now her books will live forever."—Stephen King
Learn more about the Harry Potter spin-off, Fantastic Beasts and Where to Find Them: