The flying bug, presumably a fly, first came to rest above the billionaire’s right eye before briefly stopping above his upper lip as the former Big Apple mayor ripped President Trump’s business acumen.
Some Twitter users considered the unexpected bug landing the highlight of the night.
“The fly on Bloomberg’s face stole the show tonight,” wrote one user.
Another said: “The fly on Bloomberg’s face has been the most interesting part so far!”
A third person, apparently unmoved by either 2020 presidential candidate, declared, “I would vote for the fly on Mike Bloomberg’s face.”
Despite the bug, Bloomberg continued his speech unimpeded.
The businessman took Trump to the mat on his own history as a property developer and accused him of running America into the ground.
“Trump said we should vote for him because he’s a great businessman. Really? He drove his companies into bankruptcy six times, always leaving behind customers and contractors who were cheated and swindled and stopped doing business with him,” Bloomberg said.
“Well, this time all of us are paying the price, and we can’t let him get away with it again,” he continued, speaking from Colorado.
The media mogul, 78, had a brief run for president this year, but dropped out of the race after several weak performances in the Democratic debates.