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A man, often a teacher, who acts as if he knows all and is better than any other. He makes frequent references to others' parents referring to their awful parenting skills. He wishes you confided in him, but you would never do such a thing. A duchemin is also very forgetful and impersonal, letting words go in one ear and out the other.
What a duchemin, all he talked about was himself; it was like an infomercial.
by carnationize1234 November 13, 2009
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