A sousaphone of bloviation is an instrument for discourse at length in a pompous or boastful manner. The phrase comes from Kara Swisher who wrote in a May 27, 2020 article, "Mr. Trump still has the very widest berth of any Twitter user on the planet to huff and puff away on his tiresome sousaphone of bloviation." She continued, "tiresome sousaphone of bloviation" and continued, "after doing absolutely nothing about the president’s rule-breaking posts by deeming his every utterance “newsworthy” (even covfefe), Twitter finally labeled two of his tweets about mail-in voting as “potentially misleading” and linked to articles that debunked his musings."
