Of Unknown Origin/YMMV


 * Paranoia Fuel: Ever wondered how many nooks and crannies suitable for rats your home has?
 * Special Effect Failure: When the rat jumps past Bart in his bedroom, it's an obvious plushie.
 * What an Idiot!: When Bart notices that the rat trap in the dollhouse is missing, he sticks his hand in blindly and feels around. It's pretty obvious what happens next.