Ben Carson, retired neurosurgeon and former Republican candidate for president, endorsed Donald Trump for president Friday at a news conference in Florida.

Carson praised Trump and said the billionaire wants "the voice of the people to be heard."

Then, Carson said this, "He's actually a very intelligent man who cares deeply about America. There's two different Donald Trumps. There's the one you see on stage and the one that's very cerebral, sits there and considers things very carefully."

That was all it took for Twitter to kick into gear. Here’s a sampling of the responses:

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Waymo autonomous vehicles operate across 65 square miles inside I-285 and have been involved in six incidents with Atlanta Public School buses since May. Waymo issued a recall because of their cars briefly stopping or slowing down before continuing forward while a bus was stopped and flashing its lights. (Courtesy of Atlanta Public Schools)

Credit: Courtesy of Atlanta Public Schools