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If the real John Bolton is not actually insane, which a number of people believe him to be, Dana Carvey's version definitely is. The Wednesday "Late Show" guest had his old friend Stephen Colbert cracking up from the craziness.

Colbert, who used to write on the short-lived "Dana Carvey Show," could not keep a straight face while "interviewing" Donald Trump's new national security adviser "John Bolton." Multiple times, the CBS personality had to hide his laughter behind a prop or even just his hands — think Bill Hader doing Stefon on "SNL."

Expect Carvey's mustachioed character to come back after this initial reception.

CBS via YouTube
Stephen Colbert introduces America to Trump's new National Security Advisor John Bolton (Dana Carvey).