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

Quagmire's father, a Navy lieutenant, comes to town to visit his son -- and reveal that [[{{Transgender}} he's undergoing gender reassignment surgery]].
!!"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 someone's 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.
* BrokenAesop: The episode was meant to be a sympathetic portrayal of transgendered people yet it never once addresses how society feels about transgender people and how they aren’t something to fear. While Peter’s actions could be the case of HanlonsRazor, it’s blatantly obvious that Lois is transphobic. Yet the episode never highlights how they're wrong for feeling the way they do about Ida, instead opting to present Quagmire in the wrong for not instantly accepting her choice.
* FreezeFrameBonus: After Brian tells Stewie that he slept with Ida, they have exaggerated lip flap for the remainder of their conversation, implying that Brian and Stewie are now flaccid.
* IBangedYourMom: Brian gives Quagmire a variation of this after the NoHoldsBarredBeatdown:
-->'''Brian:''' Hey.
-->''Quagmire turns around.''
-->'''Brian:''' I [[PrecisionFStrike f*cked]] your dad.
* MadeOfIron: After Glenn beats the daylights out of Brian, the latter is able to get up, walk to the front door, and gloat, because he's pleased at having slept with Glenn's mother, and Glenn hates him so much.
* MoodWhiplash: Brian is laughing like crazy upon finding out about Dan, until he discovers Dan had gender reassignment surgery and became 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: Quagmire 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.
* ScreamDiscretionShot: When Glenn finds out that Ida slept with Brian.
* SuddenlyShouting: Brian and Stewie do this in panic after realizing that Brian slept with Quagmire's father.
* 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''.