Fuck
The infamous "f-word". It is used mostly as a putdown or a social phrase, or     sometimes "to have sex with".
Put downs:
1.Fuck You!
2.Your a fucker
3.Fuck off!
4.Your fucking dumb
Well, I can go on for hours for this, but lets move on..
Social Phrase:
1.Fuck ya!
2.Fuck that
3.That fucking sucks
4.Thats fucking awesome!
To have sex with:
1.I fucked my girlfriend last night
2.He fucked some other girl
Otherwise, it self explanatory