Ohhhhh.

Damn. I already upvoted this, so now I've actually read that scene, I can't righteously upvote. Also, seconding moridinamael; Moody's Naruto line was pretty damn hilarious. Though now I'm wracking my brains trying to remember whether 'no match for this eye of mine' is lifted directly from Naruto, or you were just successfully emulating shonen braggadocio.

Clearly visible from where Harry had perched himself on his chair's arm was a truncated-conical object, like a cone with its top snipped off, slowly spinning around a pulsating central light which it shaded but did not obscure; and each time the inner light pulsated, the assembly made a vroop-vroop-vroop sound that sounded oddly distant, muffled like it was coming from behind four solid walls, even though the spinning-conical-section thingy was only a meter or two away.

https://www.google.com/search?q=conic+frustum