Audio problem: While Pickles is sniffing the ground, she asks Bob "Did you know vomit tastes bad?", but her lips don't match what she is saying.
Continuity mistake: While Mr. Klimer is forcing Debbie into the car, he for some reason seems to have a Charlie Chaplin-esque moustache which he doesn't have in any other point in the episode.
Revealing mistake: When Mr. Klimer is chasing Debbie while she says "It smells like poor people", her face is back to normal instead of disfigured.
Revealing mistake: When Mr. Klimer is forcing Debbie into the Oblong's car, her arms disappear for a single frame.
Continuity mistake: When a rock breaks through the glass and hits Bob, he drops his pipe. He hops outside, leaving his pipe in the floor. When he's approaching the Sheriff, he has the pipe in his mouth again.