For some people, it's damn near impossible.
We all put our foot in our mouths sometimes, but it used to be in private. Now the spectacle can reach every corner of social media.
In this environment of always being in the vicinity of a hot mic, to put one's hoof in mouth over and over and over again, sounds like a compulsion, a new manifestation of addiction disease, and always with the classic dumb person approach and stance of "I'm the cleverest one in the room".