It can be an animal, place, event, anything...
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During quarantine I read the Harry Potter books a bunch and know I know a lot about them. I also love Disney and am a huge nerd.
I know a lot about astronomy, board game designing, progressive music, movie trivia (especially psychotronic), Pink Floyd, the Marvel Cinematic Universe and just useless trivia in general.
I know a lot about reading a human skeleton to understand what that person's life was like, how tall they were, what sex them might have been, what type of foods they may have eaten, what types of tasks they regularly performed, and what types of diseases they had.
I know a lot about Harry Potter, Avatar: The Last Airbender (and LoK too I guess), The Dragon Prince. I also know a lot about LGBTQIAP+.
I assume you mean something random I know a lot about. Because I was bored over quarantine, I know now a bunch about criminal psychology, famous cons and con men, the whitewashing of middle eastern Americans (which relates to me :P), and Russian fairytales. Oh, and also how a virus spreads. Researched that one out of pure fear and anxiety. :')
Harry Potter! I Have spent so much time on my amount of Harry Potter trivia knowledge and I'm quite proud of it. I still don't know everything though.
I know a lot about space, mostly stuff that has to do with black holes. I know a lot about weather. Sadly, I know enough about phantom fireworks that I can name a firework when I see it in the sky.... Yeah... my life is that sad. I also know the basics of paranormal haunting and investigations. And I know a lot about urban legends. Yeah... I went overboard on this but ok!
3D printing and the history of cosplay. I learned about that when I was starting a costume making business. :)
Guns... weaponry and warfare... CATS
I know a lot about urban legends and stuff like that. In fact, I know so much about this subject that I am sorta afraid some of the urban legends could actually happen.
This might be a little bit late, but I know something about guerilla tactics. Two of them, in fact: Rural one (like VC) and urban one (like IRA). I also know something about sarin, a poisonous gas used as chemical weapon.
Greek mythology, space, neurodiffernces (specifically autism adhd anxiety depression ptsd ocd SPD and I’m learning more about others) LGBTQ+ stuff, and probably some other things I can’t remember I’m such a huge nerd lol
Greek mythology, space, neurodiffernces (specifically autism adhd anxiety depression ptsd ocd SPD and I’m learning more about others) LGBTQ+ stuff, and probably some other things I can’t remember I’m such a huge nerd lol