DuckCorp Dico

Found one definition

1.                 From The Jargon File (version 4.4.7, 29 Dec 2003):
                   
   
   
                   
                     
   pred
    //
       [Usenet; orig. fr. the Island MUD via Oxford University] Abbreviation for “
       predictable”, used to signify or preempt responses that are extremely
       predictable but have to be filled in for the sake of form (the phrase is
       bracketed by <pred>...</pred>). X-Pred headers in mail or news serve the
       same end. Figuring out the connection between the X-Pred tagline and the
       thread is part of the entertainment. For example, it is said that any
       thread about taxation must contain a reference to Raquel Welch, if only to
       stop other people from mentioning her. This is allegedly due to a Monty
       Python sketch where a character declares that he would tax Raquel Welch,
       and he has a feeling she would tax him.