Is this some sort of cat meme. I’m not exactly sure where this comes from but judging from my research it seems to be very popular. I can’t find anything else, so I’m sticking with the cat theory.
There is the possibility that the phrase just stands on its own. I mean if there is a look on someone’s face that expressly says, “please stop talking” you probably should just stop.
What is that look anyway? I’m thinking slack jawed deadly staring on a high point of an opposite wall.