Stephen Colbert spots a moment when Donald Trump's brain shuts down completely

Stephen Colbert spots the exact moment Donald Trump's brain shut down. Colbert mocked the former president for an awkward verbal stumble at a campaign event. The Late Show host mocked the ex-president for a verbal slip-up at an event. Trump is a Republican presidential candidate for the second time.

Stephen Colbert on Republicans and abortion bans: ‘Backpedaling like a tweaked-out unicycle chimp’ Late-night hosts discuss Arizona re-enacting a 160-year-old abortion ban and Trump’s attempts to appear more moderate. Stephen Colbert: 'Republicans are backpedaling' like a 'tweets-out chimp'