This word always and only follows the word "pure" (which means the same thing) and for this reason should be thrown out. If you can't think of another instance to use the word we don't need it. Also it sounds a little porn-y.
On a related note, I'd like to take back the word "adult". Porn doesn't get to claim that word for itself. Adult is a totally innocent word and should not be used to describe films where people get naked and do stuff. Instead I think we should go ahead and call them what they are: Sleaze-bag films.
Also, speaking of taking back/changing words, I am going to take up my friend Brent's stance and revert to calling all pornography "porno" again. It just describes it better. It makes you feel worse about it, which is a step in the right direction, I think.