I certainly qualify to be a member of this club (clue, I watched the 1956 cup final, live on a Granada rented telly).
I suggest the Bluemoon website has a need for glossary page for those of us who sometimes struggle with the Sobriquets, Acronyms, Initialisms and Satiric Misspelling, so beloved of the witty posters (and the half-witted) and those wishing to demonstrate their status as Mensa candidates. Some I can guess others, not a clue (or scooby)
Incidentally, if I, who has "seen it all" with City, am classed a FOC, what is the collective noun for the 20 & 30 something posters who don't know their Anus from their Humerus. :)