quadruple bucky: n., obs. 1. On an MIT {space-cadet keyboard},

:quadruple bucky: n., obs. 1. On an MIT {space-cadet keyboard},
use of all four of the shifting keys (control, meta, hyper, and
super) while typing a character key. 2. On a Stanford or MIT
keyboard in {raw mode}, use of four shift keys while typing a
fifth character, where the four shift keys are the control and meta
keys on *both* sides of the keyboard. This was very difficult
to do! One accepted technique was to press the left-control and
left-meta keys with your left hand, the right-control and
right-meta keys with your right hand, and the fifth key with your
nose.

Quadruple-bucky combinations were very seldom used in practice,
because when one invented a new command one usually assigned it to
some character that was easier to type. If you want to imply that
a program has ridiculously many commands or features, you can say
something like: "Oh, the command that makes it spin the tapes
while whistling Beethoven's Fifth Symphony is
quadruple-bucky-cokebottle." See {double bucky}, {bucky
bits}, {cokebottle}.
-- The AI Hackers Dictionary