'''Airdate:''' May 9, 2010

Quagmire's father, a Navy lieutenant, comes to town to visit his son -- and reveal that he's undergoing gender reassignment surgery.
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!!"Quagmire's Dad" contains examples of ([[YMMV/FamilyGuyS8E18QuagmiresDad YMMV goes here]]):
* AnAesop: When you tell a loved one about a life changing decision, don't assume that they will accept your choice or force them to accept your decision because the choice will also effect their lives and they need time to absorb this revelation. If you are uncomfortable with someones choice, try to be supportive but don't be afraid or anxious to ask questions or voice discomfort.
* BeerGoggles: Brian is unaware of Ida's previous identity until Stewie tells him … the morning after the two slept together.
* BigNO: Quagmire upon learning that Ida had sex with Brian.
* IBangedYourMom: Brian gives Quagmire a variation of this after the NoHoldsBarredBeatdown:
-->'''Brian:''' Hey.
-->'''Quagmire:''' What?
-->'''Brian:''' I [[PrecisionFStrike f*cked]] your dad.
* MoodWhiplash: Brian is laughing like crazy upon finding out about Dan, until he discovers Dan is the woman he slept with last night.
* NoHoldsBarredBeatdown: Glenn gives a very serious one to Brian when he finds out about their little talk last night.
* RoaringRampageOfRevenge: Quaqmire went on this when he found about Brian and his dad.
* RunningGag: Once again, Brian is beaten to a bloody pulp after taking a shower, but this time by Quagmire.
* SuddenlyShouting: Brian and Stewie do this in panic after realizing that Brian slept with Quagmire's father.
* MadeOfIron: Brian takes the beating in stride, not even protesting, so he evidently thought he deserved it.
* TransgenderFetishization: Ida is portrayed as extremely attractive, especially to Brian—who ends up sleeping with her to set up an Unsettling Gender Reveal gag.
* UnsettlingGenderReveal: Brian is seriously {{squick}}ed out when he discovers the identity of Ida, vomiting for ''half a minute''.