WASHINGTON— President Donald Trump called Rex Tillerson “dumb as a rock” and “lazy as hell” on Twitter Friday, one day after the former Secretary of State had some choice words of his own about his old boss.
Mike Pompeo is doing a great job, I am very proud of him. His predecessor, Rex Tillerson, didn’t have the mental capacity needed. He was dumb as a rock and I couldn’t get rid of him fast enough. He was lazy as hell. Now it is a whole new ballgame, great spirit at State!
— Donald J. Trump (@realDonaldTrump) December 7, 2018
On Thursday, Tillerson told CBS’ Bob Schieffer that Trump was “pretty undisciplined” and “doesn’t like to read.”
WATCH: Former Secretary of State Rex Tillerson is speaking publicly about what led to his firing in March by President Trump.
— CBS This Morning (@CBSThisMorning) December 7, 2018
He also said that Trump would frequently make requests that would violate the law.
Tillerson was dismissed from the Trump administration in March.
His firing followed noticeable tension between the president and the secretary, with Trump frequently taking to Twitter to contradict Tillerson on policy matters.
…Save your energy Rex, we’ll do what has to be done!
— Donald J. Trump (@realDonaldTrump) October 1, 2017
Tillerson also reportedly called Trump a “moron” behind the president’s back following a 2017 meeting with officials at the Pentagon.
Trump and State Department spokesperson Heather Nauert both claimed Tillerson did not use the term, but the secretary pointedly offered no such denial.