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Stan and Francine travel back to 1996 to find the identity of the man who may he Hayley's father, which would make Hayley only 16 years old in the present. However, it has been established that Hayley is in community college, making her at least 18, and more than likely she is over 21 since we see her (in this very episode) out drinking with her mother.
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When the hot tub salesman is researching articles with the microfiche, the obituary for Anne Flemming can briefly be seen; Francine stumbled across this same microfiche article researching the Ladybugs in the season 2 episode "Not Particularly Desperate Housewives."
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Steve's middle name is Anita.
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When the crow swoops in to land on Stan's penis, as the camera zooms in, there are 2 frames where it can be seen uncensored.
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The song that plays during the montage with Roger stalking Stan and Andy Dick is "Honey Dove" by Lee Fields.
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When Roger and Stan infiltrate Area 51, they pass a tube where a bald old woman is floating in green liquid. This is a reappearance of Gertie - the racist old woman the Smiths passed off as an alien to the CIA in the episode "Roger Codger."
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Hayley does not appear in this episode.
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Juror number 3 in Martin Sugar's trial is the same guy that used to work at Best Buy, then applied to work for Stan, making Celebeartions, in Season 2 Episode 11 "American Dream Factory."
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This episode shows that Hayley had a twin sister named Bailey, who evidently died because Stan did not have the two vaccinated. However, in "The Most Adequate Christmas Ever", it was shown that Hayley was born in Africa without a twin.
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There actually is a "Stan's Food Restaurant"; also known as "Stan's Restaurant and Country Store", located in Columbia, Tennessee.
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Hayley was not in this episode.
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Hayley does not appear in this episode.
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When Roger is on the outside of the space shuttle while in outer space, he breaks the jar he's keeping the two scorpions in, but they survive and crawl into his body. In real life, the scorpions would've frozen up and died instantly.
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Goof: When Roger is thrown to the British Girls, the Union Flag is hung upside down.
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Roger jumps into the "Fire", but we know from season 3 episode 4 "Big Trouble in Little Langley" that Roger is extremely fire-resistant, and suffers no permanent damage from it.
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Goof: Ronald Reagan was not actually President during the 1980 Olympics. Jimmy Carter was. Reagan was not inaugurated until January 20, 1981.
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When Stan mentions becoming a cyborg in the future, he makes a reference to Han Solo. He says he wants to be frozen with a specific facial expression. He says, "It's Han Solo, from Star Trek." Han Solo is from Star Wars, not Star Trek.
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Stan and Francine's headstones at the end of the episode say they died the same year, but were born four years apart. This goes against previous information that said Francine is only 10 months younger than Stan.
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The "Japanese Funk" that Stan plays in his car stereo is "Monochrome Effect" by the Japanese band Perfume.
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Steve's friend Toshi always speaks in Japanese and never in English, but when Barry wants to play "Hide and go Pee", Steve, Snot, and Toshi's animations clearly show them all yelling "Barry, no!" This also happens during the discovery of the sex doll, then the four of them, Toshi included, shouts "A shot for shot remake of the movie Mannequin!"