Trumpeting - also known as the misfirings of a loose cannon

Donald Trump is the presumptive @GOP nominee.

Chip in now if you agree we can't let him become president: https://t.co/BSrJDaGSOe

— Hillary Clinton (@HillaryClinton) May 4, 2016

And now watch Trump trumpeting:

— Hillary Clinton (@HillaryClinton) May 4, 2016

— Hillary Clinton (@HillaryClinton) May 5, 2016

He's a loose cannon and loose cannons tend to misfire:

— Hillary Clinton (@HillaryClinton) May 4, 2016