"A few nights ago, I was in one of the worst pick-up groups I have ever seen. It was World of Warcraft, we were in Halls of Lightning, and we had opened up with a dramatic wipe on the first boss. (He wasn't even in his powered mode, which surprised me.)
Valiantly, we tried the battle again, but found the same effect. Everyone looked like they had enough gear -- I had done that boss with "worse" people backing me up. Of course, while I was pondering that, the squabbling had already begun in the party. Priest blames hunter, hunter blames mage, mage blames paladin, then the paladin stops pondering why we were failing, realizes people were blaming her, and becomes flustered that someone would actually blame her for the wipe. Meanwhile, the rogue sat in stealth and went afk. Perfect party dynamics."