Source : Free On-Line Dictionary of Computing

mumblage
     
        /muhm'bl*j/ The topic of one's mumbling (see {mumble}).  "All
        that mumblage" is used like "all that stuff" when it is not
        quite clear how the subject of discussion works, or like "all
        that crap" when "mumble" is being used as an implicit
        replacement for pejoratives.
     
        [{Jargon File}]