This is not really porn related, but I admit I adore the word "motherfucker." So I should probably join
The Society for Librarians Who say 'Motherfucker'."
Motherfucker is a great work. The homeboys who ride my bus use it as as all-purpose pronoun, adjective (motherfuckin') and interjection. I can just about alway shock the person I'm with by dropping the "m-f" bomb.
So all you motherfuckers out ther, stand proud. And keep fucking mothers, just not your own.