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An encounter in WoW, untuned by the Blizzard developers, and is too hard for even the most hardcore raiders to defeat. Alludes to the AQ40 encounter, C'thun, which was untuned for months.

ORIGINALLY COINED BY SOKKOU <DRAMA>, KORGATH
"man! kelthuzad is fucking cthuntuned!"
by Sokkou July 25, 2006
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