Yea, I like the idea of the salesman being an entity, an incarnation of Majora itself, or even a guardian that a greater being made to retaliate against the Dark Tribe, as an attempt to seal away or protect the people from the chaos of the Mask.
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Well, seeing as I'm in Canada, I've actually lost count of how many people do random, kind things. Whether to me or for other people, I see it everyday.