Aww, were you the warlock I just Slowfall+Scorch+Pyroblast! spammed to death over Wintergrasp?

Of course not, it was one of your lock-look-alike buddies. No proper warlock would be stupid enough to just sit up in the air above a PvP zone. Mages on the other hand.. :)

Your right, all the proper warlocks are on the ground, not up in the air.
You know why?
Because they were all killed by mages.

That's just a delusion caused by the intense effect even the weakest cast of Fear has on the Mage mind. Coincidentally it's also why the mages are airborne, they tend to run of cliffs in terror whenever a Warlock is about. And please do, don't worry or be ashamed by it; it's a normal reaction the awe of being in the presence of a warlock. :)

There's nothing demonic about that skull. To the extent is says "warlock" to you, it's because so many warlocks are wannabe necromancers who didn't realize that's an entirely different class, and got stuck messing around with demons instead of skeletons. Alas, most warlocks are less than sharp, so they don't even notice that death knights are the ones with a skull theme, not warlocks...

In fairness, I should note that many warlocks do run around with skulls on their gear, but you always see horns on the skulls (i.e. they have a demon-skull theme, not a human-skull theme as this armor has). The reason they invariably use demon-skulls is because they can actually kill demons, whereas getting a human skull would require killing a mage, something far beyond their capabilities.

As I recall we've rocked the skull theme long, long before DKs were around (A fact that given the general dimness of mages I'm not surprised they missed), the fact that they use it as well is because we have it temporarily on loan to them since the flowers and sun shine theme didn't quite seem to fit.

Further more the reason we use demonic skull as opposed to human (specifically mage sourced ones) is not because we lack the inability to kill mages, but rather because it is so trivial to kill a mage and we have so many of their skulls laying around that it's really become quite boring. As such we prefer the demon skull theme as opposed to the human one for a more exotic flavor. :)

*is not because we have any inability to kill mages

I would also like to take a moment to note the annoyance of mage playing room mates who make slight alterations to posts while one warlock is away from the keyboard. Regardless, it has been fixed and the offending mage has been reduced to a pile of mildly sulfuric scented ashes. So no harm done. :)