Twitter was founded in 2006. Fourteen years later, and perhaps thanks to the influential example of President Trump, the masters of the universe have apparently learned to post to it.

This week alone, a plethora of influential politicians and business leaders have at least attempted to use the social media platform with the same air of casual authenticity coupled with severity that characterizes many of Mr. Trump’s tweets.

On Thursday, Mike Bloomberg responded to a taunting tweet from Mr. Trump — pitting him against his rival for the Democratic candidacy, Senator Bernie Sanders — by telling Mr. Trump that their mutual connections had nothing but contempt for him.

“We know many of the same people in NY. Behind your back they laugh at you & call you a carnival barking clown,” he said. “They know you inherited a fortune & squandered it with stupid deals and incompetence.”