Fuck. It’s satisfying to say and very unladylike, both good attributes for a word meant to shock and emphasise. In common useage the word represents violence, trickery, domination and has even become a synonym for jerk, yet at the same time it is supposed to represent sex. In short, the word conflates sex and rape, putting them into the same category, something which I believe our culture has already done enough of.
Update: Read comments for further information and analysis.