J. Random /J rand'm/ n. [common; generalized from {J. Random Hacker}]
   Arbitrary; ordinary; any one; any old. `J. Random' is often prefixed to
   a noun to make a name out of it. It means roughly `some particular' or
   `any specific one'. "Would you let J. Random Loser marry your daughter?"
   The most common uses are `J. Random Hacker', `J. Random Loser', and `J.
   Random Nerd' ("Should J. Random Loser be allowed to {gun} down other
   people?"), but it can be used simply as an elaborate version of {random}
   in any sense.

J. Random
     
         /J rand'm/ (Generalised from {J. Random Hacker})
        Arbitrary; ordinary; any one; any old.  "J. Random" is often
        prefixed to a noun to make a name out of it.  It means roughly
        "some particular" or "any specific one".  "Would you let
        J. Random Loser marry your daughter?"  The most common uses
        are "J. Random Hacker", "J. Random Loser", and "J. Random
        Nerd" ("Should J. Random Loser be allowed to {gun} down other
        people?"), but it can be used simply as an elaborate version
        of {random} in any sense.
     
        [{Jargon File}]