When Bart comes out of the water with the cooler, he doesn't have a shirt on. At no point does he put his shirt back on, it reappears when Lisa takes the food off everyone. See more...
When Willie punches Professor Frink, look at the picture of Chewbacca on his shirt. If you look carefully the eyes on it move. See more...
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The entry you are changing the wording of is:
|Original entry||Smithers made his first appearance in this episode but he was mistakenly animated with the wrong colour. He was made into an African American with blue hair. This was corrected in the episode "There's No Disgrace Like Home", where he appeared in his normal yellow colour.|