Source : Free On-Line Dictionary of Computing

baz
     
        /baz/ The third {metasyntactic variable} "Suppose we have
        three functions: FOO, BAR, and BAZ.  FOO calls BAR, which
        calls BAZ..." (See also {fum}).  Occasionally appended to
        {foo} to produce "foobaz".
     
        Early versions of the Hacker Jargon dictionary derived "baz"
        as a Stanford corruption of {bar}.  However, Pete Samson
        (compiler of the {TMRC} lexicon) reports it was already
        current when he joined TMRC in 1958.  He says "It came from
        "Pogo".  Albert the Alligator, when vexed or outraged, would
        shout "Bazz Fazz!" or "Rowrbazzle!"  The club layout was said
        to model the (mythical) New England counties of Rowrfolk and
        Bassex (Rowrbazzle mingled with Norfolk/Suffolk/Middlesex/
        Essex)."
     
        [{Jargon File}]