Top Definition
a person who thinks they know alot on a certain subject but when questioned will have no clue about and of it. these persons are commonly known to incorrectly sing the lyrics of the band rammstein but think they are right. they are also prone the disturbing sexual outbursts. these persons frequently lie about the extent of their knowledge mainly in the feild of comic books and film.
the sexual outbursts can be violent and disruptive, avoid getting within five feet of the jfluff.

do not, under any circustances, play rammstein when a jfluff is in the room. the examples are too bad to mention.
by aguardiandevil July 20, 2010

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