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A secondary posting identity of a regular poster on an internet message board. A poster may develop several different doppels using different email addresses in order to troll and make comments that he wouldn't make when using his primary username.

Origin: The Motley Fool Discussion Boards
JoeBob has 438 doppels. Some examples: JoeShmoe, JimBob, JoseRoberto, JimeRoberto, SaddamHater, FatMan15, PoopyHead, etc.
by George Lucas November 07, 2003
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