Continuity mistake: When "B" accidentally pulls the leg off of the dead dog, the position of it in her hands changes between cuts.
Continuity mistake: Near the end Bridget blocks Ginger in the toilet by propping a plank of wood under the door handle so the door cannot open outward. Earlier, when Ginger was trying to cut off her tail, the door opened inward.
Continuity mistake: Towards the end of the film the amount of monkshood inside Brigette's needle changes several times.
Continuity mistake: When Ginger and Bee are buying tampons, Ginger takes the box from Bee twice without once giving it back.
Suggested correction: The problem is, they are offscreen between the two shots and at least a little time has passed given they're walking around a large store. And given Ginger is in a lot of pain and keeps grabbing herself, it's entirely possible she handed the box back to Brigitte offscreen. We also don't know how far they walked or if they did more shopping before they checked out. (Which is when Ginger grabs the box a second time.) It's not like she grabs the box twice back-to-back instantly.
Continuity mistake: The amount of blood on Sam's face once he's been attacked by werewolf Ginger changes around three times between shots.
Continuity mistake: When Brigitte pries the photo of the werewolf out of her Polaroid camera, in the first shot, her hands are extremely pink/red. (I'm not sure if it's the lighting, or if it's meant to be blood from cleaning off her sister.) Regardless, the color is very obvious. When it cuts to a closeup of her hands holding the photo, suddenly, he skin is perfectly white and not pink. It cuts back to the first angle, and they are very pink/red again. Clearly the closeup shot was filmed at a different time.
Continuity mistake: When Jason is trying to get Ginger to smoke with him at the store, he leans in and says " nothing quite takes the edge off like a good toke!" His face is only about 4-5" from her face to her left. It then cuts to another angle, and we see he's longer that close to her in fact he's not even onscreen, meaning he moved back instantly at least a foot between cuts.
Continuity mistake: When Ginger and Brigitte are buying tampons, when Brigitte says "This one comes with a free calendar" she turns around to look at Ginger. The way she is holding the box of tampons and her laptop (I think that's a laptop?) changes instantly between cuts. Ginger also moves about a foot or two back between the same cut.
Continuity mistake: When Ginger and Brigitte get home after Ginger is attacked by the werewolf, the amount and pattern of the blood on Ginger (especially around her face) changes from when they first enter the living room door, to when it cuts to Ginger being laid down on the bed.
Continuity mistake: In the beginning when the mom discovers the dead body of her dog, she walks in front of an outdoor playhouse in a wideshot. It then cuts to a medium shot of her screaming. Between shots, she is suddenly standing in a different spot entirely... she goes from standing in front of the corner of the playhouse, to being dead center in front of it. She also seems to be several feet closer to it.
Continuity mistake: During the dinner scene in the beginning, when Ginger says "Maybe it's cancer of the spine!" her hand (which was down on the table) is suddenly up by her face instantly between cuts.
Continuity mistake: When Brigitte is pushed into the dead dog on the track field, she starts to wretch and puts her hand up by her mouth. Ginger comes over and asks if she's OK. Instantly between cuts, Brigitte's hand goes from up by her mouth to down by her side.
Continuity mistake: When Ginger and Brigitte are smoking in the school field in the beginning, when Brigitte refers to Trina as "Your standard c***-buckety date-bait, " Ginger's hand (holding the cigarette) goes from down by her side to up right next to her face instantly between cuts.
Continuity mistake: When Ginger and Brigitte are smoking in the school field in the beginning and notice Jason checking Ginger out, they turn around. Ginger hand (holding the cigarette) goes from up near her chest to down by her waist instantly between cuts as they turn around. Between the same cut, Brigitte's hand also goes from exposed to covered by her sleeve.
Continuity mistake: In the classroom at the beginning, when Jason asks "Can we see the ones with Ginger again?", watch closely. His hand instantly raises between cuts. Additionally, the girl behind him goes from having her arms down, to having one up under her chin, to back down again between cuts.
Continuity mistake: When Ginger and Brigitte are taking a photo of Ginger "impaled" on the fence right before the opening credits, the amount of blood on the fence instantly changes between cuts after Brigitte says "Too much blood and I can see your gonch!" (Suddenly, much more blood appears on the fence posts on the right side of screen).
Continuity mistake: When Ginger and Brigitte are talking about their suicide pact in the first scene, Ginger puts her hand out and says "Out by sixteen or dead on the scene " When she first reaches her hand out, it's flat with her palm facing up and her fingers pointed out. It then cuts to the opposite angle, instantly she is holding her hand with her palm facing out and her fingers pointed up.
Continuity mistake: In the opening scene, from the moment the little boy wipes the blood on his face to the last time we see him (when the mom is crying about how "It got our dog!"), the amount of blood on his face changes at least twice. Sometimes there is more or less depending on the shot.
Continuity mistake: In the scene where Jason has hold of the little boy in the Halloween costume, the hat on the boy's head disappears between shots, just before Jason releases him.
Continuity mistake: When Ginger and Pamela are talking about why Ginger's back is hurting, the bread Ginger is eating and the hand she's holding it in changes repeatedly throughout the scene.
