JK Rowling has attacked President Donald Trump many times during his term. Her latest jab on Twitter came after POTUS signed a memorandum to pull out of the Iran deal. Rowling posted a picture of Trump holding up his signed memorandum next to a news article about graphology. Graphology involves studying one’s signature and handwriting for personality traits. The article says a large signature could be a sign of “tendencies of vanity, pride and excessive self-esteem."