This one time in Brayflox...
I had a tank who I am pretty sure was a bot. Prot had worn off and he'd run into boss fights before I could re-cast it. Constantly circled around mobs while auto-attacking. Never responded to party chat. Never used a single hate-generation skill.
Same instance and the tank dropped (we were about to kick him anyways, but kudos to the super patient group I had. We'd wiped about 3 times on the last boss and decided then we should kick him, but he left so whatever)... New tank gets in and says it's his first time doing the fight. He's a pally. It's one mob. He can't hold aggro. Doesn't move out of the thing that whallops you. Doesn't get the boss out of the slime. DPS tries to help by asking a friend for a good hate-rotation. Gets insulted by the tank. Timer runs out...