I'd be careful of using it, if only to sanitize the forum for those that access from work. Such words can flag a lot of users for incorrect use of internet access.
But that said, what the hell did you expect in the Sexuality forum anyway?
:P
On some other forums I visit, we've tended towards the FCUK version of words. (For those that don't know, FCUK is French Connection UK, a clothes reatailer that plays mostly on it's name for advertising. It's about all the appeal they have, the clothes are shit and overpriced.)
cnut is the typical form we've started to use. Similar to the use of the word 'pron' to bypass filters.