'''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]]):
* BigNO: Quagmire upon learning that Ida had sex with Brian.
* MoodWhiplash: Brian is laughing like crazy upon finding out about Dan, until he discovers is the woman he slept with last night.
* RunningGag: Once again, Brian is beaten to a bloody pulp after taking a shower, but this time by Quagmire.
* TenWithATwo: Brian is unaware of Ida's previous identity until Stewie tells him … the morning after the two slept together.
* UnsettlingGenderReveal: Brian is seriously {{squick}}ed out when he discovers the identity of Ida, vomiting for ''half a minute''.
* RoaringRampageofRevenge: Quaqmire went on this when he found about Brian and his dad.
* NoHoldsBarredBeatdown: Glenn gives a very serious one to Brian when he finds out about their little talk last night.
* 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.
* TookItLikeAMan: Brian takes the beating in stride, not even protesting, so he evidently thought he deserved it.