Trumpet

From the English Trump and Puppet. Someone who makes a lot of noise but doesn't really say anything. Or someone who repeats things that are not true, or is manipulated to do so.

"That news anchor on Fox News was such a Trumpet."

Fred: "Hey Jim did you know the Earth is flat?"
Jim: "Shutup fred you are such a Trumpet."

Did you see that orange man carrying on like a rabid narcissist psycopath? Yep he's a Trumpet.