barney

   In  Commonwealth  hackish, barney is to {fred} (sense #1) as {bar} is
   to  {foo}.  That  is,  people  who  commonly  use fred as their first
   metasyntactic  variable  will  often use barney second. The reference
   is,   of  course,  to  Fred  Flintstone  and  Barney  Rubble  in  the
   Flintstones cartoons.

[glossary]
[Reference(s) to this entry by made by: {fred}{metasyntactic variable}]