Have you ever experienced this?

Every once in a while, typically in the middle of a delicate conversation that I know is very important, I get an impulse to ruin the situation completely. If I'm being interviewed for a potential job, or on a first date with someone I'm trying to impress, an image will flash through my head of me willfully ruining the situation, like punching the person in the face, or doing something completely uncalled for. This always surprises me and I don't know what to make of it. Not to dramatize, but is there some sinister psychological root? Is my subconscious briefly dominating in some weird way? Has anyone else experienced this?