Michael Bloomberg taunted President Trump on Twitter Thursday minutes after his longtime pal Roger Stone was sentenced to 40 months behind bars in federal prison.

“Shouldn’t you be pardoning Roger Stone, you #carnivalbarkingclown?” Bloomberg wrote in response to an earlier tweet from the president.

Bloomberg’s nasty tweet came after Trump put up a post on Twitter quoting Bloomberg’s line at Wednesday’s debate that Vermont Sen. Bernie Sanders had no chance to beat the president in November.

“Mini Mike Bloomberg. Mini, there’s even less chance, especially after watching your debate performance last night, of you winning the Democrat nomination…But I hope you do!” the president wrote.

Bloomberg’s response reprised an insult he’d leveled against the president in an earlier tweet.

“@realDonaldTrump – we know many of the same people in NY. Behind your back they laugh at you & call you a carnival barking clown,” Bloomberg tweeted. “They know you inherited a fortune & squandered it with stupid deals and incompetence.”

Bloomberg’s taunt came shortly after Trump’s longtime pal Stone was sentenced in federal court in DC to 40 months in prison, and reflected widespread speculation that Trump would grant Stone a pardon.