The Free On-line Dictionary of Computing (17 December 2009):

computer geek
computer nerd
geek
turbo nerd

    (Or "turbo nerd", "turbo geek") One who eats
   (computer) bugs for a living.  One who fulfils all the
   dreariest negative stereotypes about hackers: an asocial,
   malodourous, pasty-faced monomaniac with all the personality
   of a cheese grater.  The term cannot be used by outsiders
   without implied insult to all hackers; compare
   black-on-black usage of "nigger".  A computer geek may be
   either a fundamentally clueless individual or a proto-hacker
   in larval stage.

   See also Alpha Geek, propeller head, clustergeeking,
   geek out, wannabee, terminal junkie, spod, weenie.

   [Jargon File]

   (1997-06-26)