Okay, that wasn't very delicate, but it was accurate enough: Archavon expels a cloud of noxious fumes that does AoE damage and radically reduces the chance to hit for anyone standing in it. Since us melee types tend to try and stab, claw, pummel and otherwise do damage to his posterior I can understand why he might view us with disdain. However, it does lead to an issue. Many tanks when fighting Archavon, especially in PuG's where you might not be used to the mechanic, only pull him so far out of the cloud so that they escape its effects, but leave his butt hanging out in the gas. This means the melee DPS has to choose between standing in the death cloud and taking damage while missing with almost every attack or coming around to give the boss a greater chance to parry.
We got a tip today from Jaxtrasi saying that he'd written a visual guide to the fight. While it does lack in stuffed animals, he does a good job of demonstrating to the tank new to this fight how to move the boss out of his nacho-laden death gas. Well, I just assume Archie eats a lot of nachos, he has that kind of look. The only thing it fails to mention is that Archie also likes to lunge the tanks and if the offtank is in that gas cloud his taunt has a huge chance of being resisted, leading to a DPS warrior ending up tanking because he was just outside of it, not that I know anyone who's ever screamed like a 50's sitcom wife seeing a mouse upon realizing that he just lost 18k health in two seconds or anything.
I hate you, Archie, because you are dangerously flatulent.