Continuity mistake: On the Jolly Roger, Hook slashes one of his men and asks, "Any other contributions?" The pirates are positioned differently in the shots facing Hook and in the shot facing themselves. (00:32:15)
Continuity mistake: After the Lost Boys fire their arrows at the Wendy-bird, the position of the arrows on Tootle's back differs in the front shot and back shot as they watch the arrow hit Wendy. (00:33:35)
Continuity mistake: When the Lost Boys see that they have shot down Wendy, they turn around and say "Tootles has killed her" and they are spread out, but when Peter comes in a second later, they are grouped together. (00:34:15)
Continuity mistake: After Wendy is shot by Tootle's arrow, while she lies on the ground the boys are gathered around her and Peter takes his "kiss" from under the neck of her gown. The "kiss" is looped onto the chain around Wendy's neck, but in the next shot Peter holds it without the chain. He could not have removed it from the chain, which is still around her neck, so quickly. (00:35:25)
Continuity mistake: When Wendy awakens, she opens the door to find the Lost Boys standing there looking 'lovable'. The shots from the interior shows Wendy's hand on the door with her arm outstretched while she remains inside. Yet in the exterior shots she is standing outside the door frame. (00:37:15)
Continuity mistake: The inside of the front door of Wendy's house changes completely in different shots. 1. The interior shot after Wendy wakes up. 2. The exterior shot of Wendy standing in the doorway with the Lost Boys. 3. When Wendy wakes up aboard the Jolly Roger and opens the door. 4. When Wendy leaves the Jolly Roger and Hook waves goodbye. (00:37:15 - 01:00:00)
Continuity mistake: As Wendy approaches the Lost Boys to give them their medicine, in the close-up they surround Peter begging to be killed. In the next wide shot Tootles pulls one of the twins close and puts his arm around him, though in the next shot they are positioned as they were in the first close-up. Wendy's necklace changes within these shots as well. (00:39:15)
Continuity mistake: John and Michael dash out of the cave with the crocodile and run. After John yells, "Happy thoughts!" the exact same shot is seen twice as they run together. Then when John and Michael step into the traps, each are snared only on their right leg. However, in the next shot both of their legs are trapped as they hang upside down. (00:40:20)
Continuity mistake: When Princess Tiger Lily finds the two boys hanging upside-down in a snare, she is looking forward at them, and then falls backward laughing and rolls down an embankment. When the two boys start yelling at Hook, they all look straight up to see them, though they should be a good ten feet from that spot. One may argue she went back to that spot when trying to retrieve her knife before the pirates caught her, but even then, she was holding the knife when she fell, and would still be far from the right mark. (00:40:45 - 00:41:45)
Continuity mistake: Tiger Lily's painted blue hand on her face changes its shape throughout the shots in the forest and Black Castle. For example, when she is in the boat entering the gate as she stares wide eyed at the skeletons, the blue thumb is thicker and parallel to her face, whereas in the forest the blue thumb is thin, long and points towards to the side of her face. (00:41:00 - 00:43:00)
Continuity mistake: When the mermaids swim toward Peter and Wendy, in the wide shot as three of them begin to surface, floral plants float between two of the mermaids. However in the close-up as the mermaids surface, they are next to one another with no plants between them. (00:42:20)
Continuity mistake: As Peter saves Wendy and scares away the mermaids his body position is very different in the wide shot between the two close-ups. (00:42:45)
Continuity mistake: At the Black Castle, Princess Tiger Lily's make-up completely rubs off when she is in the water but when she kisses John, she has a dark area around her eyes. (00:45:55 - 00:48:50)
Continuity mistake: At the Black Castle, Hook reappears and calls out, "Mr. Smee?" In this shot there is an oar handle at the bow of the boat. In the next shot facing Hook, the oar is gone. (00:46:05)
Continuity mistake: Smee and another pirate are at the Black castle and the pirate wears a buckled strap across his chest. The position of this strap changes in different shots. When Hook shoots him, the huge bullet hole does not appear in the wide shot, only the close-up. (00:46:10)
Continuity mistake: At the Black Castle, John, Michael and Tiger Lily are in the water, yet when they try to open the gate their clothing, especially John and Michael's gowns, are very obviously not as wet or as clingy as they should be. (00:48:40)
Continuity mistake: When Hook slices Peter at the Black Castle, we see very that Hook cuts Peter directly below the jugular notch at the neck. Yet in the following shots the cut is shown to be far below the original cut made nor does it have the same appearance within those shots as well. (00:50:25)
Continuity mistake: In the Black Castle, when the croc appears outside the gate on the rock, we see in the left corner of the screen the children in the boat with Wendy standing up, next shot is of them all jumping to the side of the boat looking out over the water to the croc, the very next instance, when the croc is climbing down off the rock, the children are now back in their original positions again in the boat. (00:51:00)
Continuity mistake: The long cut on Peter's upper arm changes length, position and even its angle in quite a few shots when it is visible, in the Black Castle, followed by Peter and Wendy at the fairy dance and then after their own dance. (00:52:50 - 00:56:45)
Continuity mistake: In Hook's stateroom, he speaks with Wendy, dries her tears and moves some of her hair behind her shoulder. Her hair changes position in the following shots. Throughout the film Wendy's long hair changes position in many consecutive shots. (01:02:10)
Answer: It's not that you never age, it's that you never grow up, i.e. pass into puberty and become an adult.
Myridon