I don't do this as any role I play, especially a tank. On the occasions that another player has ragequit or threatened to, my response is the same. "I've 3-manned most dungeons in this game, and I'll do it again. Do what you need to do." It's the truth and frankly, some of the most fun I've had in dungeons has been when forced to do them with three people (and no egi). However, when this happens, I certainly don't post screenshots of the dialogue on the forums. One is rude and one is tattling, and both are equally childish, IMO.