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Lucaceous is when your vetching (see vetch), on a 24-hour adderrol and Obama bender, smoking your 30th cigarette of the day, and you look into the half-open window across the alley and see your neighbor's big fat ass.
Person A: "Oh my GOD! I just saw my neighbor's big fat ass!"
Person B: "Man, that is lucaceous!"
by moldy anus November 05, 2008
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