President Trump unloaded on Rex Tillerson on Friday, calling his former Secretary of State ‘dumb as a rock’.

Earlier this week, Tillerson had criticized his ex-boss at a fundraising event in Houston, saying Trump “doesn’t like to read” and would ask Tillerson to do things that violated the law.

Trump responded to that criticism by tweeting that Tillerson, the former CEO of Exxonmobil, was “lazy as hell” and “didn’t have the mental capacity needed” while praising current Secretary of State Mike Pompeo.

Source: https://www.cnn.com/2018/12/07/politics/rex-tillerson-donald-trump/index.html