Related:

• garply: /gar'plee/ [Stanford] n. Another metasyntactic variable (see {foo})
  once popular among SAIL hackers. -- The AI Hackers Dictionary...
• flarp: /flarp/ [Rutgers University] n. Yet another {metasyntactic variable} (see {foo}).
  Among those who use it, it is associated with a legend that any program not containing the word `flarp' somewhere will not work....
• metasyntactic variable n. A name used in examples and understood to stand for whatever thing is under discussion, or any random member of a class of things under discussion.
  The word foo is the canonical example. To avoid confusion, hackers never (well, hardly ever) use `foo' or other words like it as permanent names for anything....
• foobar: n. Another common {metasyntactic variable}
  ee {foo}. Hackers do *not* generally use this to mean {FUBAR} in either the slang or jargon sense....
• hud: n. 1. Yet another {metasyntactic variable} (see {foo}).
  It is reported that at CMU from the mid-1970s the canonical series of these was `foo', `bar', `thud', `blat'....
• flarp /flarp/ n. [Rutgers University] Yet another metasyntactic variable (see foo).
  Among those who u it, it is associated with a legend that any program not containing the word `flarp' somewhere will not work....
• fish: [Adelaide University, Australia] n. 1. Another {metasyntactic variable}.
  See {foo}. Derived originally from the Monty Python skit in the middle of "The Meaning of Life" entitled "Find the Fish"....
• grault: /grawlt/ n. Yet another {metasyntactic variable}, invented by Mike Gallaher and propagated by the {GOSMACS} documentation.
  See {corge}. -- The AI Hackers Dictionary...
• fred: n. 1. The personal name most frequently used as a {metasyntactic variable} (see {foo}).
  Allegedly popular because it's easy for a non-touch-typist to type on a standard QWERTY keyboard....