Plot hole: In the end of the film it is heard the police want to exhume the body of Charles Lee Ray from his grave site in New Jersey. Now when Chucky and the crew get to the grave site they find and kill a coroner who is digging up the body. He is the only one there at 1am, by himself, a lonely coroner without any police officers, after all this is a police investigation and I doubt the cops would have him there alone. Then right at the end the Detective who is hunting them arrives. Now he is a cop from Lockport, about six states away. A. Why did he drive all that way to see the body? B. A cop from all the way down there shows up but no new Jersey cops are at the scene?
Continuity mistake: When Chucky kills the coroner there is a generous amount of blood splashing on the gravestone. But in the next shot we can see that he is standing next to the gravestone. Chucky shot the coroner in the back of the head since he was looking in the other direction and is falling on his face, so there should be no blood on the gravestone.
Revealing mistake: When they are all in the camper van Tiffany gives Chucky a biscuit then walks away from him, from the way she gave him the plate, they would have all fallen off. (01:07:35)
Other mistake: When Tiff picks up Chucky to throw him into the crib, you can tell that the Chucky doll is inactive and not on or alive. (00:21:20)
Other mistake: In the beginning, when Tiffany has just had her soul put into the bride doll, she is reading the "Voodoo for Dummies" book and Chucky tells her that the page she is looking for is in Chapter Six, page 217. When she flips to it, the camera shows the top of the page before panning downwards. On the top of the page it very clearly says "Chapter Eleven". (00:31:45)
Revealing mistake: When the gay friend finds the dead chief in the van, he gets out and runs in front of a lorry. Watch closely and you'll see the blood starts flying before he has even disappeared behind the truck. (01:04:05)
Continuity mistake: Jade is in the grave when she throws the amulet to Chucky. Seconds later, after Jesse shows up, it cuts to her standing out of the grave, but she wouldn't have had time to climb out yet.
Continuity mistake: Just after Chucky blows up Needlenose's cop car a bonnet or something flies off. In the next frame someone is in the payphone then a fraction of a second later they are outside it running away about three feet from the payphone as it disintegrates.
Continuity mistake: In the first film, when Charles Lee Ray died and the Police Officer found him, his eyes were open, his mouth closed, his face clean, clothes in perfect condition, and head staring straight up into the sky. When Chucky holds up the picture of him dead in this one, his eyes are shut, his mouth is open (and there's blood coming out of it), his face is dirty and facing to the side, he's missing parts of his clothing (e.g. his tie), and his shirt is now wide open. His body is still in the same place it's was when he died, because the floor is the same, and there's doll boxes around him.
Plot hole: When Tiffany locks Chucky in the wooden cage, (The "Nursery" she calls it) you can see her lock the top. The problem is that the lock is put on in such a way that it would not actually keep Chucky in the cage. It is on the top of the cage, but doesn't connect with the cage at any other part. It simply wouldn't work.
Continuity mistake: When the cop finds the dead Tiffany doll shortly before she is giving birth to the baby doll there is neither blood on her dress nor a hole in it. But in the first shot after she was stabbed she is lying on her back and her dress has blood all over it and a pretty big hole in it.
Continuity mistake: In the beginning when Tiffany is taking a bath and Chucky escapes out of the crib he walks in there and the curtains had 3 butterflies on them. Then the part when Jesse walks in to the trailer you can see that the butterflies are now on the other side of the curtains.
Deliberate mistake: When Tiff (as a doll) lights her Zippo you don't see her clicking the flint, even though one can hear a 'clicking' sound. (00:33:35)
Continuity mistake: Tiffany drops Chucky in a prison-like playpen she calls the "nursery" and closes the cage, causing a folded purple blanket over the hood to slide back, then locks the cage to the hood. In the full-view shots, the blanket is up to the lock, and in the close-up shots of Chucky, the blanket is against the wall.
Continuity mistake: When David opened the chest and saw Warren inside, Warren's shirt was soaked in blood. When he opened it again to show Jesse and Jade, his shirt was completely clean; not a sign of blood anywhere.
Continuity mistake: There is a scene where Jade, Jesse, and the two dolls pull up to a wedding chapel. We see them pass a neon statue of what appears to be the Virgin Mary. While Jade and Jesse are inside the chapel getting married, Tiffany looks out of the windshield and comments on how beautiful the statue is. Apparently Jesse backed the van up about 50 feet before parking it, and the chapel apparently moved with him.
Continuity mistake: When Jade pulls the amulet off Charles Lee Ray's skeleton, she snaps the neck and it falls off. A minute later when Chucky falls into the grave the head is back on.
Continuity mistake: When Jade and Jesse begin making out in the car, Jade is climbing into the backseat with both her hands around Jesse. When it cuts, Jade has her right hand on the driver's seat. (00:08:05)
Continuity mistake: When Tiffany is talking with the gothic guy that has Chucky on his stomach, you can see Chucky's eyes change position. First they look at Tiffany then they look straight forward. (00:16:00)
Continuity mistake: In part 3, the left side of Chucky's face was sliced off, but in this film Tiffany sews the right side together.
Answer: As specified in Seed of Chucky it's a voodoo pregnancy. That's why the pregnancy last shorter than a normal one.
Mortug