Democratic National Convention via AP
It’s a common affliction among politicians vomititus of the mouth. For most, it strikes whenever they come within range of a news camera and a boom mic.
John Kerry has suffered since as far back as 1971 at least. Here is some of the earliest video evidence of his chronic condition.
As the years wear on, the disease manifests itself more and more as a matter of not knowing when to shut up because the audience is simply tired of listening to your endless prattle.
But, more serious cases involve the inability of the person to simply remain quiet when the subject matter concerns issues that should not be raised in front of particular others in attendance.