Somebody explain this movie to me.
I get it -- it's not really the final chapter. I have no problem with that. Stop pointing it out.
No, I'm talking the climactic scene, where Tommy Jarvis (the *cough* incomparable Corey Feldman) shaves his head. For some reason, this gives JASON FREAKIN' VOORHEES the heebie-jeebies, allowing Tommy's forty-three-year-old sister to sideline Jason with a machete. Of course, Jason's hand twitches, sending Tommy into a berserker rage hack-a-thon.
Hence the "finality" promised by the title. Jason's dead...or as dead as Jason gets until Part VI.
But stop and think about this for a second. Why would Jason care that Tommy shaved his head? Did he get confused into thinking he was looking at a funhouse mirror? Was it supposed to make Jason think there was a "mini-me" version of himself running around? Did it make Jason hearken back to his days as a weird-looking bald kid, and warm the cockles of his heart? Did he just love Tommy's charming bowl-cut, and get dumbfounded that Tommy would squander such a magnificent hairstyle?
At the end of Part 2 (they were still using Arabic numerals at that point), Ginny (Amy Steele) put on a crusty sweater that once belonged to Jason's decapitated mother. By tucking her hair behind her neck, Ginny apparently looked enough like Pamela Voorhees to momentarily make Jason think his mother had returned. Hey, nobody's ever nominated Jason for MENSA membership, so it wasn't THAT big of a stretch. At least it made sense.
But Tommy's cueball ploy shouldn't have made Jason stop for two seconds, unless it was to double-over laughing.
Ultimately, Jason got the upper hand; he's been in eight movies since that day. I'm pretty sure that beats Corey Feldman.