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The act of being so annoying that you become "a Devan".
"A Devan" is also addicted to masturbating to hardcore lesbian porn.
Devan: hey what's your name? I like apples.
Guy 2: shut up your now a part of devanism
Devan: apples apples apples apples apples
Guy 3: fuck off
by Accidental Anal Man June 08, 2017
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