If there’s one person who’s mastered the art of the one-tweet shutdown, it’s J.K. Rowling.

Whether the person on the receiving end is a troll hiding behind a frog avatar or the president of the United States, Rowling only needs 140 characters.

On Monday, she had her sights set on two targets: Donald Trump (once again) and Fox News.

It started with this tweet:

An hour later, the Harry Potter author hit back with this:

Having successfully Expelliarmus’d Fox, she moved on to the man himself.

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