I saw this story online quite awhile back and would really love to find it. I would estimate it was something like 10-12 years ago, but even that's just a rough guess. No idea what the title was, but the story centered around three characters. Two of them were basically established pie fetishists -- one a straight man and the other a lesbian These two are good friends who share a mutual desire to see pretty women pied. To this end, they invite a very attractive young woman they both lust after to one of their homes, hoping to introduce her into the slaphappy world of sexy pie fights. Needless to say, things go well in this regard and all three end up well and truly creamed.
It was written by a guy who used to go by the name Argus with his earlier stories, and who now goes by PieWriter here on the UMD. This story I'm looking for may have Argus as the author name, or it may not list an author at all.
In any event, PieWriter has a blog of many of his more recent pie stories. In general they are excellent and I highly recommend them -- full of lots of detailed setup and great taunting dialogue leading up to the throwing of the pies. I've talked to PieWriter on several occasions about this old story, but he says he doesn't have a copy of it anymore. If anyone else out there does, please please please share it with the rest of us. Thanks!