from
Jargon File (4.4.4, 14 Aug 2003)
cokebottle
/kohk'bot.l/, n.
Any very unusual character, particularly one you can't type because it
isn't on your keyboard. MIT people used to complain about the
`control-meta-cokebottle' commands at SAIL, and SAIL people complained
right back about the `escape-escape-cokebottle' commands at MIT. After
the demise of the {space-cadet keyboard}, cokebottle faded away as
serious usage, but was often invoked humorously to describe an
(unspecified) weird or non-intuitive keystroke command. It may be due
for a second inning, however. The OSF/Motif window manager, mwm(1),
has a reserved keystroke for switching to the default set of
keybindings and behavior. This keystroke is (believe it or not)
`control-meta-bang' (see {bang}). Since the exclamation point looks a
lot like an upside down Coke bottle, Motif hackers have begun
referring to this keystroke as cokebottle. See also {quadruple bucky}.