foo bar x fubar

http://en.wikipedia.org/wiki/Foobar
The term foobar is a common placeholder name, also referred to as metasyntactic variable, used in computer programming or computer-related documentation.

http://en.wikipedia.org/wiki/FUBAR
FUBAR is an acronym that commonly means “Fucked Up Beyond All Repair” (used to describe the state of some equipment) or “Fucked Up Beyond All Recognition” (used to describe a situation or scenario), which now exists in many variations. Although it originated in the US Armed Forces, its usage has spread to civilian environments.