No, none of the above. Nope.
Not that it matters a ton: It was a friend of Sammy Hagar (Ray Mancini) that thought that. The band went with the name as a compromise instead of calling the album "Fuck" as a protest over censorship.
The author (one Evan Morris) always reminded people that acronyms were extremely rare before about WW2, and so acronym etymologies for old words are virtually always made up (Morris blamed tour guides for keeping them circulating).
Why is that?
1. My brain is full of all sorts of random knowledge with no good explanation for how it got there, like names of Chinese provinces or how to conjugate French verbs.
A week later a new equally expensive sign was being installed with the less provocative “Thai Food”
The suggestion that it comes from Polari is far more interesting, as Polari was incorporated into the great British tradition of using innuendo to get past unimaginative censoriousness. https://en.wikipedia.org/wiki/Julian_and_Sandy
A similarly spelled word comes from Urdu for example https://www.etymonline.com/word/khaki