When Sid first carves Wartz' nose into the soap, it is facing to the right, but the completed Wartz doll has its nose facing to the left. It switches back to facing right after Sid tries to confess at the police station.
Arnold's pants and hat were missing at the police station in one frame but return when the lady at the desk begins to walk to the door.
It is highly unlikely that Sid's use of a revenge soap doll would be in violation of school policy, as Wartz claims.
Sid's clothes disappears after he puts on his towel.
In the credits, Dan Castellaneta is not credited for voicing Dr. Steiglitz or Wartz's roommate. Instead, he's credited for voicing Grandpa Phil, who didn't appear in the episode.
Multiple synopses for this episode mistakenly say that Sid wants to get revenge on Arnold for embarrassing him, when it's actually getting in trouble with Principal Wartz that triggers his vengeance.
