Before you ask...yes, this is the Friday the 13th porno spoof. Oh, yeah. It exists......well, sorta. If you're expecting a film where Jason Voorhees has sex with his victims before he kills them with his trademark machete...you might as well wait for a while longer, because you don't get that here.
Friday The 13th: A Nude Beginning is a 1987 adult film released during the final years of the original movie franchise, it spoofs the subtitle of Part 5 (A New Beginning)....and yet this has as much do with Friday The 13th as The Erotic Adventures Of Dickman & Throbbin' has to do with Batman. In other words....not so much.
The story in this one is about two supposed demons (the male demon wears the trademark Jason hockey mask for like ten seconds) who constantly brag that they can turn the most innocent humans into sex-crazed maniacs. So throughout the film, it's just the two demons transporting from their hellish world (which looks like a furniture showroom if it were hosted by King Diamond) to the real world, seducing innocent men and women, one of them being a Jimmy Swaggart caricature, "Jimmy Braggart" (har har).
OK, so this film was undoubtedly made while the whole Jimmy Swaggart scandal was the talk of the news. And I can certainly understand what the film is trying to get across - everyone can act all innocent and such, but sometimes we just give in to our animalistic desires. Yeah sure fine whatever. But if you're going to have Friday The 13th in your title, don't just have some douchebag wear a hockey mask for several seconds and have him call himself Jason. We wanna see Jason coping feels with teenage camp counselors, then chopping them up to bits! But if you're the sick weirdo who wants that kind of thing, there's always Entrails Of A Virgin.
You can find the full version of Friday The 13th: A Nude Beginning online...if you care.