bang: 1. n. Common spoken name for `!' (ASCII 0100001),
especially when used in pronouncing a bang path in spoken hackish.
In elder days this was considered a CMUish usage, with MIT and
Stanford hackers preferring excl or shriek; but the spread of
Unix has carried `bang' with it (esp. via the term bang path) and
it is now certainly the most common spoken name for `!'. Note that
it is used exclusively for non-emphatic written `!'; one would not
say "Congratulations bang" (except possibly for humorous purposes),
but if one wanted to specify the exact characters `foo!' one would
speak "Eff oh oh bang". See shriek, ASCII. 2. interj. An
exclamation signifying roughly "I have achieved enlightenment!", or
"The dynamite has cleared out my brain!" Often used to acknowledge
that one has perpetrated a thinko immediately after one has been
called on it.