Diarrhea of the mouth

He's just a kid, and he's got diarrhea of the mouth, but he's pretty cool.

A psychologist might call his behavior narcissistic, egotistical, and, no doubt, a sign of hidden insecurity. Donald himself called it "truthful hyperbole." Broker Ed Gordon labeled it "diarrhea of the mouth."

When the person holding the highest office in the land makes derogatory comments about people who have held, or are holding high positions in our military and other institutions of our democracy, this kind of thoughtless diarrhea of the mouth has repercussions around the world.