We've all had those nights. Whether it's an obnoxious PUG from the Dungeon Finder, a string of losses in battlegrounds or the arena, a comment setting off a drama storm in guild chat, or a night of wiping on a raid boss you should have on farm ... Every once in a while, you're going to have an incident in the game that will put you in a bad mood.
We had a few of these this week. Our normal 10-man raid group had been stirred up by some people not being able to raid, and we had to take some newer players to kill Cho'gall who didn't know the fight. After three or four wipes on a boss that we typically kill in one shot, it became clear that it wasn't going to happen. Our fill-in tanks were undergeared, we didn't have strong enough AOE to deal with adds, and single-target damage on the boss was lacking. It also only took three or four wipes for our disc priest to start getting snippy in Vent, and he's usually such a joy to talk to anyway. /sarcasm