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Watch Family Guy Season 12 Episode 21 online via TV Fanatic with over 9 options to watch the Family Guy S12E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, Hulu, FOX, and Xfinity.
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Stewie decides to use his time machine to prevent his own birth on the season finale of Family Guy.