J.K. Rowling has pretty much been the undisputed queen of Twitter since she joined six years ago. She's an active user, posting Potter trivia & news on the reg, and frequently uses the platform to talk directly with her fans.
So when a supposed Potterhead had a dumb response to Rowling tweeting support of Wimbledon champ & superhuman Serena Williams...
#SerenaSlam! I love her. What an athlete, what a role model, what a woman!-- J.K. Rowling (@jk_rowling) July 11, 2015
...J.K. laid the smackdown on thick.
Check out more of Rowling's Twitter takedowns, and just plain awesome tweets, in the slides below: