In her new tell-all book, Mary Trump, the niece of the current POTUS, Donald Trump, described him as a man who still thinks like a toddler! According to her, he has many ‘deep-seated insecurities’ that have led to Donald Trump acting like a 3 year old. As you might have heard, Mary Trump has been exposing her uncle in her brand new book, dragging the president and blaming his upbringing for his behavior today.