Family Guy S05E18
Meet the Quagmires
Plot: Death grants Peter's wish to go back in time to 1984 when he was 18, but only for one night. He end up bailing on a date with Lois to hang out with a movie actress. When he returns to the present, he soon realizes that everything is but normal, as he is now married to the former actress, and Lois is with Quagmire.
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