Watch The Simpsons Online: Season 33 Episode 21

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What did Grampa hide from his entire family?

On The Simpsons Season 33 Episode 21, a face from the past returned and the bombshells shocked the family.

Bonding With Bart - The Simpsons

As a hamburger past threatened to derail everything, Grampa had to make a big decision about his past and future.

Elsewhere, Marge tried to make sense of a sudden epiphany.

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