magic}, and {magic number} (sense 2).

:Black Screen of Death: n. [prob. related to the
Floating Head of Death in a famous "Far Side" cartoon.] A
failure mode of {Microsloth Windows}. On an attempt to launch a
DOS box, a networked Windows system not uncommonly blanks the
screen and locks up the PC so hard that it requires a cold
{boot} to recover. This unhappy phenomenon is known as The Black
Screen of Death.

:Black Thursday: n. February 8th, 1996 -- the day of the
signing into law of the {CDA}, so called by analogy with the
catastrophic "Black Friday" in 1929 that began the Great
Depression.

:blammo: /v./ [Oxford Brookes University and alumni, UK] To
forcibly remove someone from any interactive system, especially
talker systems. The operators, who may remain hidden, may `blammo'
a user who is misbehaving. Very similar to MIT {gun}; in fact,
the `blammo-gun' is a notional device used to `blammo' someone.
While in actual fact the only incarnation of the blammo-gun is the
command used to forcibly eject a user, operators speak of different
levels of blammo-gun fire; e.g., a blammo-gun to `stun' will
temporarily remove someone, but a blammo-gun set to `maim' will
stop someone coming back on for a while.

:blargh: /blarg/ /n./ [MIT] The opposite of {ping}, sense
5; an exclamation indicating that one has absorbed or is emitting a
quantum of unhappiness. Less common than {ping}.