Source : Free On-Line Dictionary of Computing

meeces
     
         /mees'*z/ ({TMRC}) Occasional furry visitors who are
        not {urchin}s; that is, mice.  This may no longer be in live
        use.  According to {ESR} it derives from the refrain of the
        early-1960s cartoon character Mr. Jinx: "I hate meeces to
        *pieces*!"
     
        [{Jargon File}]
     
        (1996-12-09)