Homer becomes a minister after Springfield legalizes gay marriage (to boost their damaged reputation for tourists) and Patty comes out of the closet, much to the shock of her sister, Marge, who was naive to her sister's sexuality.

!! Tropes:
* ComingOutStory: Patty comes out of the closet.
* ComicallyMissingThePoint: When Reverend Lovejoy forbids homosexual marriage because the Bible forbids it, Marge asks which book. Lovejoy repeats 'The Bible' as if it were a stupid question, forgetting that the sections of the Bible are split into different books.
* {{Content Warning|s}}: In America, this became the first episode to open with a "Viewer Discretion Advised" card before the opening, due to homosexual marriage being a hot-button issue with most U.S. viewers.
* EveryoneCanSeeIt: When Homer is looking for more gay couples to marry.
-->'''Homer''': Where's Lenny and Carl?
-->'''Marge''': Don't you push them! They have to work that out for themselves!
* {{Expy}}: Howell Huser, the host from the beginning of the episode, is a pretty clear Expy of travel host Huell Howser.
* HetIsEw: After marrying every gay couple in Springfield, Lisa suggests that Homer also marry hetero couples, much to his disgust.
-->'''Homer:''' What's that thing called when a guy is gay for a girl?\\
'''Marge:''' ''Straight!''\\
'''Homer:''' (''mincing around'') Ohooo, look at me, I'm so straight and normal! I'm straight as a number-two pencil!
* {{Hypocrite}}: Marge was proud of Homer for marrying homosexuals but was disappointed when Patty revealed herself to be a lesbian.
* IHaveNoSon: Patty said she had no Non-Identical Sister if Marge doesn't accept her.
* OhCrap: Bart once he realized who he and Milhouse were pranking at the beginning of the episode.
* OnlyInItForTheMoney: The reason Homer became a minister. In fact, [[HypocriticalHumor he was holding a sign reading "Death Before Gay Marriage" before learning a minister can get $200 for each marriage he celebrates.]]
* ScrewYourself: Homer has a fantasy about being married to ''himself''.
* SnapBack: Lampshaded at the end of the episode:
-->'''Lisa''': Well, that's the end of Dad's wedding business.
-->'''Bart''': Why?
* SoProudOfYou: Marge said this word for word to Homer because of allowing people to express love.
* SoundEffectsBleep: When Reverend Lovejoy refuses to marry the gay couples that came to the church as the Bible forbids it, Marge tries to tell him the bible condridicts itself depending on what book you read from, only for Lovejoy to drown her out with the church's bell.
* SpeakNowOrForeverHoldYourPeace: When Homer reached this line during Parry's wedding, Marge spoke up. Patty thought it was because she disapproved of her sexuality, but it was really because Marge didn't want Patty to be hurt because her fiancee was really a man.
* TransparentCloset: In the words of Patty regarding her sexuality, "You could see it from space!"
** To help drive this trope home, Homer (of all people) got it when Marge didn't:
--->"Here's another bomb for ya, Marge: I like beer."
* VisualPun: Howell Huser rides into Springfield by falling off the back of a turnip truck. See the main entry for explanation.