JK Rowling can't stop laughing after Trump boasts about his writing abilities

Regardless of your views on President Trump, we should all be able to agree that the man is not a great writer. His speaking and reading skills are also debatable. But let's stick to the writing bit today.
Trump's grasp on grammar is so bad, we published a list just this week compiling the highlights from his presidential typos. 
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Then, on Tuesday, Trump tweeted this:Image:Donald Trump/TwitterJK Rowling, the in