J.K. Rowling just coined a Harry Potter version of 'splaining' and it's A+

Is there a word for the scenario where someone tries to explain the meaning of your own book to you?
Well, there is now. J.K. Rowling's just invented it.
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It started on Tuesday night, when someone on Twitter attempted to compare Trump to Snape. Rowling wasn't having any of it, though.Yeah, nopic.twitter.com/pQCqTo66YU
— J.K. Rowling (@jk_rowling) July 3, 2018Five minutes later, a new word was born.Don&rs