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A famous internet troll, known for hijacking message boards by building copycat boards and directing members of the victim board to the copycat. Also known for creating havoc on message boards by ID trolling unsuspecting victims by replacing the letter "m" with "rn", such as the ID troll "horner1443" for trolling "homer1443". To be a victim of Flannel's trolling, one is said to be "flanneled".
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