is a prominent episode of the animated series American Dad! (often listed as Season 7, Episode 16 or Season 8, Episode 16 depending on the platform). Plot Summary
: The episode heavily parodies 1990s culture, featuring "The Macarena" and a younger version of Roger who claims to have invented ecstasy.
: Stan immediately offers to donate his kidney, but Francine reveals a long-held secret: she was unfaithful just before their wedding. There is a chance Stan is not Hayley's biological father, making him a potential non-match. [S5E14] The Kidney Stays in the Picture
: After a night of heavy drinking with Francine and her wild old friend Kelly, Hayley suffers severe kidney failure.
: After nearly disrupting history by stopping her younger self from the hookup, Stan realizes he must ensure it happens to save Hayley. In the present, Stan obtains a kidney from Joel but insists on donating his own as well, instructing the doctor not to tell him which one was used to keep Hayley's true parentage a mystery. Key Notes & Trivia is a prominent episode of the animated series American Dad
: The episode was originally written to feature a character named "Liver" voiced by Nathan Fillion, though this part was cut from the broadcast.
: This marks Stan's second time-travel adventure in the series. : Stan immediately offers to donate his kidney,
: To save Hayley, Stan and Francine use a CIA time machine to travel back to the 1990s to find the man she slept with—Joel Larson—to secure his kidney.