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J.K. Rowling
When a rude Twitter user blasted Serena Williams after J.K. Rowling tweeted, "#SerenaSlam! I love her. What an athlete, what a role model, what a woman!" the Harry Potter author was having none of it. 

According to ABC News, this Twitter troll then chose to make a nasty comment about the Wimbledon champ's body. But J.K. Rowling's response was swift, flawless, and  merciless. "'She is built like a man'. Yeah, my husband looks just like this in a dress. You're an idiot." Couldn't agree more, J.K.