There are many fine words in the english language, and many fine words in the Network Engineers dictionary, however none of them has the amount of cachet and elan that “foo” can bring to your profession.

Examples of using foo –

As a verb – foo-m – “then the router went foom and we were dead”.

As a noun, “if we have router ‘foo’ here, and ‘bar’ here”

For a full, satisfying and standardised definition you are referred to RFC3092 which is the finest exposition available on foo.

Note: foo is NOT to be confused with FUBAR

bar /bar/ n. [JARGON]

1. The second metasyntactic variable, after foo and before baz.
“Suppose we have two functions: FOO and BAR. FOO calls BAR….”

2. Often appended to foo to produce foobar.

foo /foo/

1. interj. Term of disgust.

2. Used very generally as a sample name for absolutely anything, esp.
programs and files (esp. scratch files).

3. First on the standard list of metasyntactic variables used in
syntax examples

Link to Full RFC 3092