:tip of the ice-cube: [IBM] n. The visible part of something small and
insignificant. Used as an ironic comment in situations where `tip
of the iceberg' might be appropriate if the subject were at all
important.
-- The AI Hackers Dictionary
mumblage: /muhm'bl*j/ n. 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....