filk

from Jargon File (4.4.4, 14 Aug 2003)
filk
 /filk/, n.,v.

   [from SF fandom, where a typo for `folk' was adopted as a new word]
   Originally, a popular or folk song with lyrics revised or completely
   new lyrics and/or music, intended for humorous effect when read,
   and/or to be sung late at night at SF conventions. More recently
   (especially since the late 1980s), filk has come to include a great
   deal of originally-composed music on SFnal or fantasy themes and a
   range of moods wider than simple parody or humor. Worthy of mention
   here because there is a flourishing subgenre of filks called computer
   filks, written by hackers and often containing rather sophisticated
   technical humor. See {double bucky} for an example. Compare {grilf},
   {hing}, {pr0n}, and {newsfroup}.
    
from The Free On-line Dictionary of Computing (8 July 2008)
filk

   /filk/ [SF fandom, where a typo for "folk" was adopted as a
   new word] A popular or folk song with lyrics revised or
   completely new lyrics, intended for humorous effect when
   read, and/or to be sung late at night at SF conventions.
   There is a flourishing subgenre of these called "computer
   filks", written by hackers and often containing rather
   sophisticated technical humour.  See {double bucky} for an
   example.  Compare {grilf}, {hing} and {newsfroup}.

   [{Jargon File}]
    

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