Examples of foo
Where does foo come from?
Who uses foo?
Foobar is not equivalent to the WWII military term FUBAR, an acronym for “Fucked Up Beyond All Recognition.” Though it’s possible that the linking of foo and bar might have grown out of familiarity with and playful allusion to FUBAR, programmers using foobar do not use it in this sense.
“Foo was here” was a popular piece of graffiti drawn by Australian soldiers in WWII, and possibly even WWI, that depicts a little man poking his head and large nose over the wall à la Kilroy. While the origins of this foo are unclear, it appears to be unrelated to Holman’s foo.
Foo’ is sometimes also used as a shortening of fool in English dialects, often a reference to the way the word was said by Mr. T in The A-Team. This has no connection to the programming term.
This is not meant to be a formal definition of foo like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of foo that will help our users expand their word mastery.