Stephen Colbert late Monday mocked President Trump
Donald John TrumpHouse Democrat slams Donald Trump Jr. for ‘serious case of amnesia’ after testimony Skier Lindsey Vonn: I don’t want to represent Trump at Olympics Poll: 4 in 10 Republicans think senior Trump advisers had improper dealings with Russia MORE for a tweet that he was a "stable genius" and "like, really smart."
During his late-night show, Colbert said being "like, really smart" is not the same thing as "being really smart."
Colbert added that people who are mentally stable "generally don't announce it."
"I believe it was René Descartes who said, ‘I think, therefore I am, like, really smart.’”
His comments come after Democrats and the media have raised questions about Trump's mental fitness for office in the wake of revelations from a new book detailing the first year of the Trump administration.
Trump over the weekend tweeted about his mental stability.
Hillary Diane Rodham ClintonGrassley blasts Democrats over unwillingness to probe Clinton GOP lawmakers cite new allegations of political bias in FBI Top intel Dem: Trump Jr. refused to answer questions about Trump Tower discussions with father MORE also played these cards very hard and, as everyone knows, went down in flames. I went from VERY successful businessman, to top T.V. Star ... to President of the United States (on my first try). I think that would qualify as not smart, but genius ... and a very stable genius at that!"