9th Dec 2013
Continuity mistake: When Lisa is going door-to-door with the petition, Milhouse opens his front door and there is no mail slot on the door, but when Nelson punches Milhouse in the stomach there's a mail slot on the door, beside the door knob. (00:09:10)
9th Dec 2013
Continuity mistake: When Bart falls off the roof and grabs hold of the gutter, in the overhead shot the gutter is an L-shape with a 90° angle, but after Homer and Bart high-five each other, the gutter is a straight line that ends at the corner. (00:08:10)