There are other variations of this acronym that use words that rhyme with duck but I thought it would be best to keep it PG.

“Most reference works, including the Random House Unabridged Dictionary, supply an origin date of 1940-1944, generally attributing it to the U.S. Army. Rick Atkinson, in The Day of Battle: The War in Sicily and Italy, 1943-1944 (The Liberation Trilogy) ascribes the origin of SNAFU, FUBAR and a bevy of others to cynical GI’s ridiculing the Army’s penchant for acronyms.” - Wikipedia