Honey Mustard's legs completely disappear after being returned to the store, then reappear when he is chosen again.
The height of the dreamcatchers in Firewater's hideout is different in the overhead shot.
Frank and his fellow hot dogs should be refrigerated in the supermarket as they are meats otherwise they would go off and cause food poison.
The German on the sweet mustard is misspelled. Schmekt Gut should be Schmeckt Gut.
The Shopwell clerk fires his revolver eight times without reloading, but several scenes show the cylinder holds exactly six rounds.
The main characters are aware of the concept of eating, and that they themselves are food, yet act horrified when they discover that they are to be eaten. This is consistent with one of the main themes of the movie - the rejection of reason and evidence in favor of blind faith in merciful gods and the Great Beyond... until it's too late.
Inanimate non-foodstuff objects such as the Douche, and the condom, are anthropomorphic, but many objects (such as the various blades) are shown throughout the film as having no anthropomorphic features.
In most grocery retailers any returned food products are required to be discarded due to concerns over tampering.
Despite Gum's claim, bath salts do not contain opiates. Almost all bath salts contain synthetic cathinones, usually mephedrone. Mephedrone, and all cathinones, are a synthetic central nervous system stimulant and have very similar affects to amphetamines.