In the cinema, Messy Tessie has a bag of popcorn full to the top. She then sneezes and half of the popcorn flies over the cinema, yet in the next shot her bag of popcorn is still full to the top.
When Tangerine and Dodger are getting into her convertible to go sell her clothes at the concert, it is broad daylight. In the next cut, they're driving at nighttime with the headlights on.
When Tangerine is walking outside the store she is wearing black or dark grey tights. When she is inside the store she suddenly has nude or tan tights.
When the Garbage Pail Kids are locked in the basement playing cards, Valarie Vomit coughs up an ace of hearts and adds it to her hand. But when we see her hand, she is holding a royal flush in spades.
When the Garbage Pail Kids steal the delivery truck, the driver's belt and the rope connecting his pants to the truck disappear during some shots.
Valerie Vomit's eyes can be seen constantly malfunctioning in close ups due to the unfinished animatronics.
As it is well known that the puppetry and animatronics were not properly finished for the film, the filmmakers had to work with what they had, as a result the Garbage Pail Kid Ali Gator can be seen several times with his mouth open and immobile in wide shots.
Nat Nerd is known for constantly urinating, however, there are several moments where the stream can be seen coming from outside his pants.
During the scene where Ali Gator is riding the ATV to "The Toughest Bar On Earth", he reaches up to scratch his head, and you clearly see the separation between his arm and the "alligator arm".
Obvious stunt double for Dodger when he fights Juice at the fashion show.
Shadow of the cameraman visible on Tangerine when she crosses the street at night to meet Juice.
Before the fashion show starts, Tangerine tells the girl, "Honny, don't use it." As she's walking away the shadow of one of the cameras is visible, moving forward.
There is never a given explanation for why Juice and his friends are constantly terrorizing Dodger, they could just be bullies but they are never shown in the same school together or anything like that, there is never any backstory given for what looks like are a group of young adults that are antagonizing a pre-teen.
Dodger's home life or his parents or family are never shown or mentioned in the film.