"Reputable sources such as the Oxford English Dictionary contend the true etymology of fuck is still uncertain but appears to point to an Anglo-Saxon origin. Early modern English fuck, fuk suggests a weak Middle English verb *fuken, but neither this nor any earlier form is attested. Synonymous German ficken may or may not be related. It would point to a common Germanic origin."
Ostatak na linku ispod
http://en.wikipedia.org/wiki/Fuck