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Cajun French for "little asshole." pronounced "kool-yaw." Denotes a dick, a pendejo, jerk, a truly malignant asshole. Conveys deep contempt.
That maudit anglais math teacher who does mid-week pop quizzes is a real cuillon!
cuillon by Cajun Scientist February 26, 2010
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Andres Cubillos

Someone who lets their girlfriend boss them around like a complete bitch. They are frequently horny.
Looks at that chick beating her man. Yeah he’s Andres Cubillos.