President Trump on Friday fired back at former Secretary of State Rex Tillerson, by calling him “dumb as a rock” and “lazy as hell.”

“Mike Pompeo is doing a great job, I am very proud of him. His predecessor, Rex Tillerson, didn’t have the mental capacity needed,” Trump tweeted Friday. “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!”