So back in original WoW, my guild was raiding MC. There was a part where we need to pass over a bridge and below on the left side was a boss (I forget his name) I was a Hunter at the time. I accidentally told my pet to attack said boss because it was the first time I saw it so I was targeting him. All a sudden my pet teleports to the boss and dies. I thought to myself "Ok my pet died, no big deal" then to my horror I saw the boss start running from his spawn area. Well to make along story short, I pulled that boss plus every single trash mob leading up to that boss and killed my 40 man raid. It was the most funny thing I can ever remember playing WoW.