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The highest level of an ass hole. One who everyone hates because they are constantly a jerk, as if their ass hole was always filled with liquid slag, the leftovers from the purification of metals (example: steel slag, iron slag)
"John can be such a dick sometimes."

"Yea, he deserves the title of slag ass hole."

"Damn, molten slag in your ass sounds quite painfu.l"
by lilbstar June 29, 2009
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