posted by [identity profile] kerrypolka.livejournal.com at 05:15pm on 17/10/2014
Is it to do with FUBAR? I don't associate that phrase with doctors specifically.
 
posted by [identity profile] requiem-17-23.livejournal.com at 11:10pm on 17/10/2014
The default name for a metasyntactic variable in some circles is $foo. If a second one is chosen, it is $bar. This is a relatively widespread meme in those circles to the point that if I hear 'foo' I will think 'that's a metasyntactic variable' and be on the look out for a 'bar'.

You're correct as to the etymology, but it's via CompSci.

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