Origin of the word 'fuck'

Probably most of us have heard this all alone. 'Fuck', the word is usually pronounced negative connotation to oppose something. Well, how does this word origin? Here's the explanation:

 

"Once upon a time in the UK, the population may tidah sexual intercourse without the consent of the King. When they want to have children, they must apply for a permit to the kingdom. After that the kingdom would give" The sign / Card "to be hung on the door of the couple as long as they are related. the sign reads "intimate relationship has obtained permission from the king", or in a language they were written by "Fornication Under consent of the king" (FUCK).

Means that if someone were to say the word FUCK, directly or indirectly tantamount to saying licensing for sexual intercourse: D. Haha I think is often not connect that with the often pronounced now.