Perhaps one of the most interesting words in English world today is word "fuck".
Of all English words, that begin with "F", "fuck" is the only word that is referred to as the "F" word. It's the one magical word.... Just by it's sound it can describe pain, pleasure, hate and love. "Fuck" as most words in English language is derived from German language word "ficken", which means "to strike".
In English "fuck" falls into many dramatical categories as a transitive verb, for example: "John fucked Shirley". As intransitive verb, for example: "Shirley fucks".
It's meaning is not always sexual. It can be used as an adjective such, as "John is doing all the fucking work". As part of an adverbs "Shirley talks too fucking much".
As an adverb in hancing an adjective "Shirley is fucking beautiful". As a noun "I don"t give a fuck".
As part of the word "infuckingcredible" or "absofuckinglutelly"... and as almost every word in the sentence "Fuck the fucking fuckers". 
You must realize that there is no words with versatility like "fuck". This word can describe situations such as:
trouble - "I guess I"m really fucked now";
aggression - "Don"t fuck with me buddy.";
difficulty - "I don"t understand this fucking question";
surprise - "Who the fuck was that?";
satisfaction - "I don"t like what the fuck is going on here";
in confidence - "He is a fuck off";
or dismissile "Why don"t you go outside and play "hide" and go fuck yourself."
I'm sure you can think of many more examples. With all of this multipurpose applications how can anyone be offended when you use the word. We say use this unique flexible word more often in your daily speech and it will identify the quality of your character immediately!
Say it loudly and proudly...
Fuck you. 

P.S. ..danas mi blizanka dolazi u posjetu! I šta je još bolje, she'll stay here for the next three fuckin' days.
.. Ain't that just absofuckinglutely great!!
All hail Steel Princess!
