Fred: N. 1. The Personal Name Most Frequently Used As A {metasyntactic Variable} (see {foo}).

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: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. Unlike {J. Random Hacker} or `J. Random
Loser', this name has no positive or negative loading (but see
{Mbogo, Dr. Fred}). See also {barney}. 2. An acronym for
`Flipping Ridiculous Electronic Device'; other F-verbs may be
substituted for `flipping'.
-- The AI Hackers Dictionary