[mh-cx]

Sorry to be nitpicking:

  https://en.wikipedia.org/wiki/Foobar

"Foobar

Not to be confused with FUBAR or Foobar2000."

It's linked from FUBAR but not under "disambiguation" but "See also".

[fknorangesite]

Well, yeah. But also:

> It is possible that foobar is a playful allusion to the World War II-era military slang FUBAR (Fucked Up Beyond All Recognition).

https://en.wikipedia.org/wiki/Foobar

Which is certainly how I've always understood it.

[wizofaus]

It seems the "foo" didn't come from that, but once "foo" was in wide adoption, the "bar" likely suggested itself automatically to someone familiar with "fubar".