In this, the 200th episode, Stewie goes backwards in time and, unless he can stop it, he'll be back in Lois' womb and "unborn".

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!!Tropes:

* AllJewsAreCheapskates: The moment Brian realises that time is in reverse is when he sees Mort putting a coin on the ground, instead of picking it up.
* BackToFront: The majority of the episode's gags depending on seeing the result ''before'' the cause is shown.
* BackToTheWomb: After an entire episode of shenanigans, Stewie is rewound all the way back to the day of his birth, with his parents forcing him back into his mother's womb. Thankfully, Brian is able to repair the time machine before the expected DeathByDeaging follows, allowing Stewie to be reborn - whereupon he remarks that he never realized what a "man cave" he had in Lois's uterus.
* BestialityIsDepraved: Brian travels back to the sight of the [[UsefulNotes/TheHindenburg Hindenburg]] disaster, where Herbert Morrison declares that the sight of Brian having sex with a woman somehow makes the scene even worse.
* TheBusCameBack: Cleveland appears for a backwards bathtub gag because time running in reverse causes him to move back to Quahog.
* CallBack: To "The Cleveland-Loretta Quagmire" cutaway gag song "You Have AIDS", where Peter and his barbershop quartet are shown in reverse on their way to see the man at the hospital.
* ComicallyMissingThePoint: A flashback cutaway shows Brian bringing home a woman with a pronounced stutter. Peter misinterprets this to mean that she's freezing, so he keeps raising the thermostat.
* ContinuityNod: The episode is full of references to prior events and cutaways.
* DeathByDeaging: The threat to time flowing backwards. Brian only stops it right as Stewie's about to be born.
* TheDiaperChange: Inverted; due to time reversing, Lois ''un''changes Stewie's diaper. She first removes his clean diaper, fetches a dirty diaper from the diaper pail, and puts it on Stewie's bottom. Stewie is horrified at this.
-->'''Lois:''' Phew! Smells like somebody needs a diaper change!\\
'''Stewie:''' Damn right I do! Now get this turd-filled sack off... Oh my God, it just went back in my body!
* TheDitz: Cindy (the first girl Brian shows the time machine to), who thinks the day of Abraham Lincoln’s assassination (April 14, 1865) is Valentine's Day. Brian [[SureLetsGoWithThat decides to just roll with it instead of correcting her]].
* DumbassHasAPoint: At the end of the episode, Chris comments that he heard Stewie (who had just been re-born) was talking. [[CassandraTruth Lois writes it off as ridiculous]].
* HumanCannonball: As shown through reverse time, Peter once attempted to use a cannon to fly to Australia (for some reason), only to end up hitting Cleveland's house.
* ManChild: Peter, of course. When Stewie and Brian go back to the day Stewie was brought home from the hospital, the entire family is fawning over him while Peter is lying on the couch, pounding his fists and crying, "I wanna be the baby!"
* NiceJobBreakingItHero: By messing around with Stewie's time machine, Brian ends up causing the flow of time to reverse, with him and Stewie being the only ones aware.
* OhCrap:
** Stewie when he realizes reverse time is both accelerating and affecting them.
** "Oh, my God, we're getting closer to the beginning! You're Creator/LaceyChabert!"
* OhNoNotAgain: Brian and Stewie's reaction to ending up back at the infamous ipecac incident from "[[Recap/FamilyGuyS4E8EightSimpleRulesForBuyingMyTeenageDaughter 8 Simple Rules For Buying My Teenage Daughter]]", only this time, it ends up going back ''into'' them.
* OhTheHumanity: Brian takes a date back to UsefulNotes/TheHindenburg explosion. The covering reporter lets loose the famous phrase, only to be even more disturbed by the sight of a dog and woman having sex.
-->"I know I said 'oh, the humanity' before, but seriously, oh the humanity!"
* TheOtherDarrin: InUniverse; Time running in reverse causes Meg's voice to revert back to Creator/LaceyChabert.
-->'''Stewie''': Oh, my God, we're getting closer to the beginning! You're Lacey Chabert!
* RewindGag: The entire point of this episode. "WE ATE SO MUCH VOMIT!!", sex in reverse, the chicken fight goes backwards, Stewie having his diaper ''un''changed...
-->'''Stewie''': Oh my God, it just went back in my body!
* RunningGag: Reverse versions of two hallmark gags are shown:
** We get to see Peter get involved in a backwards chicken fight, where he and the Giant Chicken end up putting the town back together instead of causing destruction.
** There's also a backwards version of the Cleveland Bathtub Gag.
--->'''Cleveland''': Man, we got a whole lotta clovers on our lawn. No, no, no, no, no, NO!!!
--->'''Peter''': Oh, hey, Cleveland.
--->''(Peter flies backwards into a cannon operated by Chris.)''
--->'''Peter''': [[NoodleIncident Australia, here I come!]]
* SdrawkcabName: The title of the episode is "Family Guy" spelled backwards.
* SeriesContinuityError: There was more than one ipecac bottle during the scene. Only one is shown.
* ShoutOut:
** "Here's where Brian goes berserk" is a reference to the "Here's where Cameron goes berserk" scene from ''Film/FerrisBuellersDayOff''.
** Peter [[Film/ForrestGump asking if Stewie's smart or more like him]] ([[SeriesContinuityError even though this was long before any of the family knew he was mentally retarded]]), quoted verbatim from Forrest Gump asking about his son.
** [[Franchise/TheMuppets Statler and Waldorf]] are in attendance at Ford's Theatre. One of them notes that [[UsefulNotes/AbrahamLincoln Lincoln]], who has just been shot, is the lucky one because "[[CausticCritic he doesn't have to sit through the rest of the show.]]"
* SoundEffectsBleep: Stewie gets one when he upchucks over eating vomit, only for reverse time to send it right back in.
* StableTimeLoop: Stewie got his name because Brian went back in time.
* StaircaseTumble: Peter ends up going through one ''backwards''.
-->'''Peter''': Dammit, I hate these new stairs!
* TakeThat: Brian watches ''Series/MeetThePress'' in reverse and observes that it consists of Republicans making ridiculous statements and the host then asking an unrelated question.
* TeethFlying: Parodied during the reverse chicken fight as Peter and the Giant Chicken end up knocking teeth back ''into'' each other's mouth.
* TemptingFate: Thanks to reverse time we see this happening backwards. During Peter's fight with the Giant Chicken, we see Seamus "falling" towards an explosion being reversed from a coffee shop that had been detonated by a stray grenade. After the explosion is undone, Seamus says: "Okay, Seamus, today's the day you finally ask out that barista. What's the worst that could happen?"
* ThermometerGag: Stewie and Brian observe Herbert chasing a child in reverse while telling him to stand up because he's going to break the thermometer.
* TranslationConvention: Time may be running backwards but no one's dialogue is.
* VomitIndiscretionShot: {{Inverted}}, PlayedStraight, and then {{Inverted}} again. "[[RuleOfThree WE ATE SO MUCH VOMIT!!]]"
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