The full form of Snafu is Situation Normal: All F***ed up
“Snafu” stands for “Situation Normal: All F***ed up”.

It is one of those acronyms the military created to explain how a situation is going. If preferred, it could also be “Situation Normal: All Fouled Up”. It might sound weird for them to say that a situation is normal but it’s fouled up. What they mean is that yeah, things are going sideways, but it’s not affecting their main operation or primary goal. There’s no change in the overall situation.

What is SNAFU’s Origin?
This slang term first started in the United States Marine Core during World War 2. It was also used in Vietnam and is still used to this day. The first time it was used publicly was in 1942, by Times Magazine. The original definition of “Snafu” was “Status nominal: all f***ed up).