I love The Simpsons so much and I've been watching this cartoon since I was 4 years old. I actually notice something in Season 30 that I find it surprising.

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In an episode where God and St Peters watch to see who goes to heaven. Ned Flanders told the story of the Sunday School students that he was selling trampoline (before he was a Christian.) And little Homer Simpson was jumping a trampoline. This means that Ned Flanders is older than Homer Simpson which was very surprising.