But he must have picked up at least a little Khuzdul, I mean, he single-handedly besieged and conquered a dwarf king's mountain fortress. He might know a word or two at the very least.
Of course, his occupation of the Lonely Mountain lasted maybe eighty years, so either he picked up some Khuzdul, or he just didn't care enough about where he was to.
I really wish I could post more than one icon right now
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Three rings for the Elven-kings munchin' on rye, Seven for the Dwarf-lords in their nightly drinks alone, nine for Mortal "Men" doomed to cry, one for the Barrel lord on his barrel-y throne in the land of hoarders where the fellows cry.