Big-Lipped Alligator Moment: The two fight scenes where Tommy beats up Eddie in the first scene and Junior in the second scenes. Surprisingly for a person who spent the rest of his childhood in an insane asylum he knows some pretty decent MMA style moves. However there is the odd question: How and when did he learn them? Was there a JKD class in the asylum he was in? Did Dan Inosanto stop by during visiting hours, or is Tommy really that crazy?
Moral Event Horizon: Roy crossed it when he started his killing spree by going after people who weren't even involved with the Halfway House. Mrs. Voorhees at least limited her wrath to anybody that set foot on Crystal Lake and Jason following her example most of the time.
Joey's sudden demise should be shocking, but the way he has established himself as The Scrappy moments earlier makes his death seem more like a blessing.
Intensive horror music plays when Pam, Tommy and Reggie drive to the trailer park.
When a lightning strike reveals to Reggie that Tommy's dark room is filled with corpses, it's a decent horror film moment. Then Pam goes in there and the exact same thing happens offscreen, it has been turned into a comedy film moment.
When Pam closes in on the killer with a chainsaw, it suddenly runs out of gas.
The blue markings in the hockey mask used in this film look like a mustache.
Interestingly, averted with the death scenes, which can verge on disturbingly realistic. Especially Robin's death rattle.
Eddie's death is sorta split, while kinda Narmish for the concept, just seeing the sight of a belt tightly wrapped around a guys eyes so much as it starts to cave in as the guy's screaming, can't help but also be disturbed by how real it looks too.
When Reggie attacks "Jason" with the tractor, it moves too slowly to be taken seriously. It takes ten full seconds from the time he crashes through the wall to the time he hits "Jason". It's like the steamroller scene from Austin Powers, but here it's played straight.
Along with Tommy, Roy Burns. He's the villain of this film, but he's no Jason. Even though, he isn't the "Man Behind The Mask", he could have been used better than he was in this film.
What an Idiot: The killer, Roy Burns: So it turns out that, Joey, the fat kid who got killed by Vic, was his son. However, instead of going after Vic, he proceeds to murder 17people for no reason, some of which who weren't even around the house where Joey died.