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

weenie

   1. [on BBSes] Any of a species of luser resembling a less
   amusing version of BIFF that infests many BBSes.  The
   typical weenie is a teenage boy with poor social skills
   travelling under a grandiose handle derived from fantasy or
   heavy-metal rock lyrics.  Among sysops, "the weenie problem"
   refers to the marginally literate and profanity-laden
   flamage weenies tend to spew all over a newly-discovered
   BBS.

   Compare spod, computer geek, terminal junkie.

   2. Among hackers, when used with a qualifier (for example, as
   in Unix weenie, VMS weenie, IBM weenie) this can be
   either an insult or a term of praise, depending on context,
   tone of voice, and whether or not it is applied by a person
   who considers him or herself to be the same sort of weenie.
   It implies that the weenie has put a major investment of time,
   effort and concentration into the area indicated; whether this
   is good or bad depends on the hearer's judgment of how the
   speaker feels about that area.  See also bigot.

   3. The semicolon character, ";" (ASCII 59).

   (1995-01-18)


The Jargon File (version 4.4.7, 29 Dec 2003):

weenie
 n.

    1. [on BBSes] Any of a species of luser resembling a less amusing version
    of B1FF that infests many BBS systems. The typical weenie is a teenage
    boy with poor social skills travelling under a grandiose handle derived
    from fantasy or heavy-metal rock lyrics. Among sysops, the weenie problem
    refers to the marginally literate and profanity-laden flamage weenies
    tend to spew all over a newly-discovered BBS. Compare spod, geek,
    terminal junkie, warez d00dz.

    2. [among hackers] When used with a qualifier (for example, as in Unix
    weenie, VMS weenie, IBM weenie) this can be either an insult or a term of
    praise, depending on context, tone of voice, and whether or not it is
    applied by a person who considers him or herself to be the same sort of
    weenie. Implies that the weenie has put a major investment of time, effort,
    and concentration into the area indicated; whether this is good or bad
    depends on the hearer's judgment of how the speaker feels about that area.
    See also bigot.

    3. The semicolon character, ; (ASCII 0111011).


Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "weenie":
   Vienna sausage, bangers, black pudding, blood pudding, bologna,
   braunschweiger, frank, frankfurter, gooseliver, headcheese,
   hot dog, knockwurst, liver sausage, liverwurst, salami, saucisse,
   sausage, wiener, wienerwurst, wienie