Had a tank in our alliance raid--Labyrinth of the Ancients, and she was in our party. Some of my party mates had some real issues with her, and I could see why. She was decked out in level 90 gear, and she acted like she didn't know the first thing about tanking. She was not pulling aggro, she failed to tank the dragon away from the middle of the explodey skeleton spot, causing the whole raid to nearly wipe, and failed to yield the last boss's one-shot move, where you have to all run to the platforms to raise the shield wall.

If that person is here, reading this, and they know who they are, this is my message to them: You want monsters to hit you. Please, make monsters hit you. Piss the monsters off to the point where they want to kill you and only you. That is called tanking. Try it sometime.