Watch The Simpsons Online: Season 33 Episode 20

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What did Bart learn about his mother?

On The Simpsons Season 33 Episode 20, the youngster was taken aback by a development.

An Unlikely Mentor - The Simpsons

Meanwhile, the family was shocked by some big changes in town.

Who was making these changes, and more importantly, was it the shape of things to come for everyone?

Elsewhere, Lisa had a new friend at school.

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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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