fubar

This is commonly used as an acronym for: F***ed Up Beyond All Recognition (Varied by the words "Fouled", "Any Repair", "Any Redemption", "All Reality", "All Repair", or "All Reason".)

Related terms:

• SNAFU - Situation Normal All F***ed Up
  
• Foobar - IT generic term (var foobar int)
  

Origins:

This is believed to of originated from the german word Furchtbar (meaning frightful or terrible), which was then adopted by the military (unable to track down exactly which division/nation) during WWII.



At this time its meaning began to be modified by the average grunts and to become the acronym that is now its norm.



Fubar is one of the few acronyms that began its existence as a real word (even if in a different language). Most acronyms used in common parlance have become so because of the flowing nature of the acronym.



Note: The military are known to be the first to incorporate acronyms in their everyday language

References:

• Wikipedia - Fubar
  
• whatis.com - Fubar
  
• whatis.com - foo
  
• Linux questions