Harry Potter author, J.K. Rowling has crafted a response to a tweet that took a cheap shot at tennis champ Serena Williams on Saturday.
The offending Twitter user, Rob @diegtristan8 drew a backlash for suggesting that Williams was more famous for her body than, say, her victory at Wimbledon on Saturday.
Rowling, who had declared herself via another tweet a member of Team Serena before the championship, joined a chorus of angry responses by dubbing Rob, an idiot:
*Inspired by http://time.com/3954611/jk-rowling-twitter-serena-williams/