I have seen it once or twice. Sometimes unfairly applied. For example, when we had reports from the intelligence services ... he felt that he wasn't getting a quality report. And really he criticized the people who appeared to make this report in a manner that was actually not fair ... So he then snaps at them in a way which was a bit unexpected. Now you do now and again get a thing like that based sometimes on a misunderstanding or based on an unfair expectation by him, of something which belongs to another forum.