To have
sexual intercourse with someone:
“Bro, I fucked her so hard last night”
To express disgust, anger:
Disgust. “Ew, you are fucking gross. That’s nasty.”
Anger. “
Oh my god! Go fuck a rhino you fat pig!”
To add emphasis to a sentence:
I can’t beleive you fucking did that! That’s
fucking sick, bro!