Did you know?

[Paladin Solo]

Hmm...might be both?

 

[Myrrdin]

It stood for Fornication Under the Consent of the King.

Just so you know, that is nothing but a hard-killed myth. According to most linguists the word "fuck" is derived either from old Scandinavian "fukka"/"focka" or old Germanic "fikken". There are also some other theories around, but they all agree that the word isn't an acronym.

 

[Dove]

Fuck it, who really cares? Just use the word more, especially in the presence of old people...

They really like it.

 

[Ozrat]

What Snopes.com has to say about FUCK

Claim: The word 'fuck' derives from an acronymic phrase, either 'For Unlawful Carnal Knowledge' or 'Fornication Under Consent of the King.'

Status: False.

Variations:
Fornication Under Consent of the King
Fornication Under Charles the King
Fornication Under Crown of the King
Fornication under Christ, King
Forbidden Under Charter of the King (a sign posted on brothels closed by the Crown)
For Unlawful Carnal Knowledge
Forced Unlawful Carnal Knowledge
File Under Carnal Knowledge (how Scotland Yard marked rape files).

[Fuck] is a very old word, recorded in English since the 15th century (few acronyms predate the 20th century), with cognates in other Germanic languages. The Random House Historical Dictionary of American Slang (Random House, 1994, ISBN 0-394-54427-7) cites Middle Dutch fokken = "to thrust, copulate with"; Norwegian dialect fukka = "to copulate"; and Swedish dialect focka = "to strike, push, copulate" and fock = "penis". Although German ficken may enter the picture somehow, it is problematic in having e-grade, or umlaut, where all the others have o-grade or zero-grade of the vowel.
AHD1, following Pokorny, derived "feud", "fey", "fickle", "foe", and "fuck" from an Indo-European root peig2 = "hostile"; but AHD2 and AHD3 have dropped this connection for "fuck" and give no pre-Germanic etymon for it. Eric Partridge, in the 7th edition of Dictionary of Slang and Unconventional English (Macmillan, 1970), said that "fuck" "almost certainly" comes from the Indo-European root *peuk- = "to prick" (which is the source of the English words "compunction", "expunge", "impugn", "poignant", "point", "pounce", "pugilist", "punctuate", "puncture", "pungent", and "pygmy"). Robert Claiborne, in The Roots of English: A Reader's Handbook of Word Origin (Times, 1989) agrees that this is "probably" the etymon. Problems with such theories include a distribution that suggests a North-Sea Germanic areal form rather than an inherited one; the murkiness of the phonetic relations; and the fact that no alleged cognate outside Germanic has sexual connotations.

Holy Fuck, that's a lot of fucking information about Fuck.