In language, "fuck" falls into many grammatical categories:

It can be used as a verb, both transitive "John fucked Mary" and intransitive "Mary was fucked by John"

It can be an action verb "John really gives a fuck" a passive verb "Mary really doesn't give a fuck" an adverb "Mary is fucking interested in John" or as a noun "Mary is a terrific fuck"

It can also be used as an adjective "Mary is fucking beautiful" or an interjection "Fuck! I'm late for my date with Mary"

It can even be used as a conjunction "Mary is easy, fuck she's also stupid"

As you can see, there are very few words with the overall versatility of the word "fuck".

Apart from its sexual connotations, this incredible word can be used to describe many situations:

1. Greetings "How the fuck are ya?"

2. Fraud "I got fucked by the car dealer."

3. Resignation "Oh, fuck it!"

4. Trouble "I guess I'm fucked now."

5. Aggression "FUCK YOU!"

6. Disgust "Fuck me."

7. Confusion "What the fuck.......?"

8. Difficulty "I don't understand fucking Maths!"

9. Despair "Fucked again..."

10. Pleasure "I fucking couldn't be happier."

11. Displeasure "What the fuck is going on here?"

12. Lost "Where the fuck are we."

13. Disbelief "UNFUCKINGBELIEVABLE!"

14. Retaliation "Up your fucking ass!"

15. Denial "I didn't fucking do it."

16. Perplexity "I know fuck all about it."

17. Apathy "Who really gives a fuck, anyhow?"

18. Greetings "How the fuck are ya?"

19. Suspicion "Who the fuck are you?"

20. Panic "Let's get the fuck out of here."

21. Directions "Fuck off."

22. Disbelief "How the fuck did you do that?"

It can be used...

...in an anatomical description "He's a fucking asshole."

...to tell time "It's five fucking thirty."

...in business "How did I wind up with this fucking job?"

...maternal "Motherfucker."

...political "Fuck Dan Quayle!"

It has also been used by many notable people throughout history :

Mayor of Hiroshima "What the fuck was that?"

General Custer "Where did all these fucking Indians come from?"

Captain of the Titanic "Where the fuck is all this water coming from?"

John Lennon "That's not a real fucking gun."

Richard Nixon "Who's gonna fucking find out?"

Anne Boleyn "Heads are going to fucking roll."

Willard Scott "It's someone's 100th fucking birthday today!"

Albert Einstein "Any fucking idiot could understand that."

Picasso "It does so fucking look like her!"

Pythagoras "How the fuck did you work that out?"

Michaelangelo "You want what on the fucking ceiling?"

Walt Disney "Fuck a duck."

Edmund Hilary "Why? Because its fucking there!"

Joan of Arc "I don't suppose its gonna fucking rain?"

Donald Trump "She wants how much fucking money?!?!?"

Orville Reddenbacher "Look! Almost every fucking kernel popped!"

Jim Lovell (captain of Apollo 13) "Huston, We have a fucking problem!!"