* From an inter-short clip where Dee-Dee decides it's "time for a nice sit"... on her brother's head.
--> '''Dexter:''' Hey, what do '''''I''''' look like, a ''chair?''
--> '''Dee-Dee:''' No, ''I'' looks like ''this!'' ''(Holds up paper with "I" on it)''
--> ''([[LamePunReaction Dexter, dumbfounded, faceplants off-camera]])''
* "Way of the Dee-Dee", in which Dee-Dee tries to encourage Dexter to break out of his cold, scientific self, tries to leap out of her swing to start the self-discovery quest, [[RealityEnsues only for the swing to snap back on her, tying her up in the set.]]
* One episode revolves around Dexter trying to avoid being shoved into in the swimming pool by his dad. By the end of the episode he finally jumps in... [[spoiler:only to [[SlipperySwimsuit lose something]] on the way out.]]
* The Christmas episode. Dexter vs Santa Claus!
** The part where Dexter apologizes for ruining Christmas, "[[NoodleIncident again]]."
** The FamilyUnfriendlyAesop that follows, as a TakeThat against [[TrueMeaningOfChristmas the typical Aesop]] many animated {{Christmas Special}}s have.
--->'''Dexter:''' Isn't Christmas really about, uh... family... and, uh... love and sharing... and... (Starts singing) O Christmas tree, O Christmas--\\
'''Dee Dee:''' [[WesternAnimation/ACharlieBrownChristmas You blockhead!]] That's not what Christmas is about!\\
'''Dexter:''' It's not? Then what ''is'' it about?\\
'''Santa:''' [[SuddenlyVoiced The presents]]. ([[AsideGlance Winks at us]]) Ho-ho-ho!
* The entirety of "The Parrot Trap" where Dexter makes a robot parrot for the sole purpose of having a yes-man around. Then it overhears him yelling at Dee-Dee, and HilarityEnsues. Here's a highlight:
-->'''Robo-parrot:''' Dexter's a stupid girl!
-->'''Dexter:''' No, no, no. Dexter is the most brilliant mind in the entire universe!
-->'''Robo-parrot:''' Dexter's a cookie!
-->'''Dexter:''' I am not a cookie!
-->'''Robo-parrot:''' Dexter's a cookie!
-->'''Dexter:''' Am not!
-->'''Robo-parrot:''' [[RuleOfThree Are too a cookie!]] *[[NoHoldsBarredBeatDown Dexter starts slamming the bird onto the desk]]*
-->'''Robo-parrot:''' Cookie! *[[NoHoldsBarredBeatDown more pounding]]*
** When he first finishes it, he calls the parrot "my greatest creation ever". Immediately after the above sequence, he calls it "the worst creation he's ever had".
** The parrot messing with Mom's cooking by suggesting crazy ingredients, including beans and cookies. And then...:
--->'''Robo-Parrot (voice of fisherman from Dad's TV show)''': Worms and plastic minnows!
--->'''Mom''': Now wait just a minute here! ''(thinks hard for a few seconds)'' [[ComicallyMissingThePoint Where am I going to find worms and plastic minnows]]?
--->'''Robo-Parrot''': The Florida Everglades!
--->''(SmashCut to [[TooDumbToLive Mom driving off in the station wagon]])''
** This sequence:
--->'''Dad''': Who's sneaking up on me?
--->'''Robo-parrot''': Dexter, boy genius. Dexter's a cookie!
--->'''Dad''': Shh, I'm trying to watch the show...
--->'''Robo-parrot''': I'm gonna bop you one!
--->'''Dad''': Now, that is no way to speak to your-
--->'''Robo-parrot''': You are a stupid girl! Get out, get out, get out! Yup, yup, yup... Don't touch anything! *Dexter's Dad crawls off, shaking*
--->'''Dad''': I-I'm sorry...
* The episode where Dee Dee was made smarter than Dexter ended with this unforgettable scene:
--> '''Dexter''' (yelling at his assistant, a cymbal-banging bear toy): '''''[[NeverMyFault THIS IS ALL YOUR FAULT!]]''''' (Cue toy [[EpicFail banging its cymbals onto Dexter's nose]])
** "''Nobody commands my computer!'' [[HypocriticalHumor COMPUTER, LIGHTS OFF!]]"
** [[CaptainObvious "My hair is on fire!]] [[ManOnFire My hair is on fire!]] [[LargeHam My hair]] [[RuleOfThree is on fire!]]"
* In "Critical Gas," Dexter eats a giant burrito for lunch, and believes he will explode from the gas. After completing his bucket list, he goes to tell his parents...
--> '''Dad''': Okay Dexter, [[TemptingFate let 'er rip!]]
** ...then, before he can say a word, he uncorks '''''the fart heard 'round the world'''''. When we cut back to the living room, Mom and Dad have utterly shell-shocked expressions on their faces, and Dexter's gas was so powerful that ''the TV behind him is now embedded in the wall''.
* Every single glorious, over-the-top moment of the ''Anime/SpeedRacer'' parody "Mock Five", especially the abuse of the MotorMouth trope.
* This part from when the computer has lost its voice:
-->'''The Computer''': (In Dee Dee's voice) Hi Dexter!
* Mandark's epic rant at the end of "Momdark".
** From the same episode, Mandark calling Dexter a stupid doody head and throwing a tantrum over never being able to beat him.
* "The Muffin King", with Dad making an all-out war out of getting his hands on those delicious muffins, is one of the funniest things in animation.
** Funniest part was Dexter and Dee Dee sending Dad to his room twice! The first time when it happens, he then tries to make Dexter bring him the muffins.
---> '''Dad:''' [[LukeIAmYourFather Dexter, I am your father.]]
---> '''Dexter:''' ''(gasp)'' No, that is not possible! Oh, wait, no, you're right.
---> '''Dad:''' So join me! Come to the muffin side! Don't resist, Dexter! ''(begins trying to hypnotize Dexter)'' [[Film/TheEmpireStrikesBack It is your destiny.]]
---> '''Dexter:''' [[BigNever NEVER!]]
---> '''Dad:''' You will get the muffins for me!
---> '''Dexter:''' ''(hypnotized)'' I will get the muffins for you. ''(walks over to get the muffins)'' Will get the muffins for you. ''(begins bringing them to Dad)''
---> '''Dad:''' Yes! Yes! Yes!
---> '''Dee Dee:''' Dexter, no! It's a mind trick! Snap out of it! ''(smacks Dexter)''
* The Justice Friends sketches, which consist of [[TheCape Major Glory]], [[PowerOfRock Val Hallen]], and the [[BoisterousBruiser Infraggable Krunk]] facing the challenge of everyday lives as they share an apartment. for example, "Val Hallen's Room";
-->'''Krunk:''' Krunk never been inside Val Hallen's room! Teddy and Krunk scared!\\
'''Major Glory:''' Krunk! You are a Justice Friend! [[ArsonMurderAndJaywalking And Teddy doesn't pay one-third of the rent]].
** Ratman, a mere child of thirty.
** The short where Major Glory is making Val Hallen and Krunk pretend to be a baseball player and an investor to impress his Uncle Sam:
--->'''Major Glory:''' Uncle Sam should be here any minute. Justice Friends, assemble! Viking god of rock, and future baseball Hall of Famer, Val Hallen!\\
(''Val Hallen slides in'')\\
'''Val Hallen:''' I think I got a raspberry.\\
'''Major Glory:''' The world's mightiest mortal, and CEO of his own amalgamated stock investment firm, Infraggable Krunk!\\
(''Krunk crashes through the wall'')\\
'''Krunk:''' (''on phone'') Have report on Krunk's desk by nine o'clock tomorrow, or Krunk smash!\\
'''Major Glory:''' No, no, no, a thousand times NO! Val Hallen, you're supposed to slide head first! And Krunk, that tie does ''not'' go with that shirt! Now, we are going to go over it again, and again, and ''again'', until we get it right! ''COMPRENDE?!''\\
(''Krunk and Val Hallen get pissed'')\\
'''Major Glory:''' Something wrong? Perhaps, I've pushed you too hard--\\
(''Krunk and Val Hallen tackle him'')
** The ending where Major Glory finds that Uncle Sam has become a hippie.
* Finding out just why the ice cream man refuses to stop for Dexter in "Ice Cream Scream". Actually, that's just the icing on one of the funniest episodes of the series.
-->'''Ice Cream Man:''' I can't even eat ice cream anymore, because of ''the pain!'' All because of your '''''stupid pennies!''''' (''[[{{Angrish}} incoherent scream of rage]]'')
** "You got change for a hundred?" [[HereWeGoAgain "AUUUUGH!"]]
* The majority of "Dexter's Lab: A Story", the one where Dexter found a lost dog. Arguably every moment after he gets said dog to speak human English qualifies.
-->'''Dog:''' Hey, hey dogs! I can hear you barking, can you hear me barking?
** One would wonder if the people who did ''{{WesternAnimation/Up}}'' got their inspiration for the talking dogs from this episode.
** "IT'S THE STICK!"
** The ending where we see what the dog's owner is like. Let's just say that it [[UncattyResemblance explains a lot about the dog himself]].
* [[http://www.youtube.com/watch?v=Fh1-yEsiP5s Dexter, what's that?]]
* The episode "911", especially Dee Dee watching the EBS message with rapt attention, reacting [[RunningGag throughout the episode]] as if she were watching a comedy, a horror movie, and a love story.
** At one point, Mom and Dad are watching it too.
* "The Koos Is Loose": "If you turn your lips inside out, you look just like Jimmy Carter."
** Koosalagoopagoop force-feeding Dexter a papé wrap.
-->'''Koos:''' Feel better?
-->'''Dexter:''' No, because I just ate a tub of meat!
* The entirety of "sdrawkcaB", in which Dexter invents a belt that allows him to go in reverse. It leads to him talking backwards, un-eating a sandwich, running up and down the stairs, and then discovering that Dee Dee has been messing with the forward/reverse switch: "(''gasp'') Dee Dee!" *switch* "!eeD eeD (''psag'')". He finally one-ups her when she puts on the belt, letting her fall to the floor from a great height, then flipping it into reverse several times.
* Towards the end of the episode, "The Continuum of Cartoon Fools", Dexter tries various ways to find out how Dee Dee got into his lab, and [[http://www.youtube.com/watch?v=EkztG4vxPjE in this scene]], Dexter pretty much goes bonkers and holds up a watermelon, screaming, "This is it, I know it!" and smashes it with a mallet.
** The end, where Dexter ends up locking himself out of his lab and realizes that in locking Dee Dee out, he locked himself out as well and begins hamming it up.
-->"Uh. Oh, my dear. In my overwhelming zeal to banish my sister from the lab, I have indeed locked myself out. Too blinded was I not to foresee the most piteous of fates. I have thus performed the ultimate tragic irony. ''(The scene cuts to "The End" title card and Dexter comes out)'' Surely I am the fool of fools on the par of no other. I am no better than [[WesternAnimation/LooneyTunes that stupid coyote or that crazy duck.]] Look at me! Look at me! I am locked in a [[TitleDrop continuum of cartoon fools!]] I am doomed to a life of comic mishap adventures and social indignations. And now, here I stand before you, beaten, defeated, and alone."
* The entire episode of "My Dad VS Your Dad". "ARE YOU ''CRAZY''?! YOU JUST THREW A ''DUCK'' AT ME!"
* "Monstrosi-Dee Dee" is a CMOF. Funniest part being Dee Dee giving Dexter various hiding places only for her as a monster to discover them and Dexter practically failing to realize that the monster is his sister.
* In "Jeepers Creepers, Where Is Peepers," Dexter and Koos' annoyed response to the {{Animesque}} villain Hookocho's drawn-out monologue:
--> [[SpeakInUnison "Could you just shut up?"]]
** Hookocho's response is also pretty hysterical.
-->'''Hookocho''': You insignificant TWERPS!
* "Dee Dee and the Man", where Dexter "fires" Dee Dee, but eventually misses her and tries to find a replacement "spastic sister".
** Dexter's interactions with the [[BestKnownForTheFanservice smoking-hot New Dee Dee]].
-->'''Dexter:''' I'd like to see you dance, please.\\
'''New Dee Dee:''' Okay, [[GettingCrapPastTheRadar but it's fifty bucks extra.]]
** "[[NunsAreFunny Spastic sister, that's what the ad said! You asked for a spastic sister and who do you get? 'Nun' other than me! Get it? 'Nun other.'" (laughs) "Well, it's been fun fun fun, but I gotta go go go, so bye bye bye!]]"
*** "...Hallelujah."
* "Decode of Honor":
** "Your club is for big [[GettingCrapPastTheRadar I-D-K-S-Cs]]!" "I... D... K... hey! I'm gonna tell mom!"
** The ending, with Action Hank and his men getting into a knock-down drag-out fight with the Pony Puffs... who manage to [[BadassAdorable put up a good fight]].
* [[https://www.youtube.com/watch?v=jbjnFvEbdaw "Rude Removal"]].
** In particular, the "[[OhCrap Oh]] [[PrecisionFStrike s***]]," ending and Polite!Dexter and Dee Dee.
*** All of Rude Removal. '''ALL OF IT.'''
* Pretty much the entirety of "Things That Go Bonk in the Night"
** This exchange.
-->'''Major Glory:''' You've been watching that TV Puppet Pals Marathon for four days! Aren't you the least bit tired?
-->'''Krunk:''' (while we see a close-up of his face with his eyes wide open and having bags under them) No.
** Krunk goes to sleep by CountingSheep. He's out like a light after only counting one!
** Krunk's attempt at a TV Puppet Pals sketch where he becomes a Puppet Pal wearing a dress and pigtails and the punchline involves a pun on "four/fore". Puppet Pal Mitch proceeds to get angry and go in a tirade on how it's only funny when he hits Puppet Pal Clem with his bonking stick.
** The ending, where it turns out to be AllJustADream, [[DreamWithinADream Puppet Pal Mitch's dream]] to be exact. They resolve never to stay up and watch the four-day Justice Friends marathon again, and wish each other good night. Then:
-->'''Puppet Pal Mitch:''' Puppet Pal Clem! There's a spider in your bed!
-->*Puppet Pal Clem sits up and hits his head on the top bunk bed*
-->'''Puppet Pal Mitch:''' BONK!
* "Dimwit Dexter", starting from the moment he turns stupid to the end.
* The snowball fight episode brings us this scene.
-->'''Dexter''': First base...\\
(''Pan up to show Dexter his hiding behind the legs of a couple making out'')\\
'''Kissing dude''': You said it, brother! (Cue {{Rimshot}}).
* The banned episode "Barbequor" brings us the [[ComicBook/SilverSurfer Silver Spooner]] and how he [[AmbiguouslyGay acts through most of the episode]]. He also happens to be a fan of Creator/JudyGarland.
-->'''Monkey''': Ack ack!
-->'''Silver Spooner''': ''(His eyes turn into stars)'' Creator/JudyGarland!? [[LookBehindYou Where!?]] *Monkey grabs his spoon from under his feet and [[HoistByHisOwnPetard hits him over the head with it]]*
** Also from the same episode is the CaptainErsatz of ComicBook/{{Galactus}} known as [[PlanetEater The Barbequor]]. What makes him funny is [[MundaneMadeAwesome what he does during his quest to eat planets]]: He literally tried to turn the solar system into a shish kebab.
*** [[RuleOfThree Also]], Krunk gets [[DrunkOnMilk drunk]] in that episode. Need we say more?
* "Dexter and Computress Get Mandark," in all its hilariously nonsensical glory.
** "[[RunningGag And then Dexter said...]]"
** "YOU ARE STUPID! YOU ARE STUPID! And don't forget, [[RuleOfThree YOU ARE STUPID]]!"
** After spending a while to explain Mandark's head growing large, the narrator says it grew bigger than the Earth, but then back-peddles by saying it was only '''as''' big as the Earth.
* From "Dad is Disturbed", Dad convincing Dexter that the golf game he's watching has a violent scene coming up and laughing like a maniac when it works.
** When Mom comes in talking loudly on the phone with a neighbor, it later cuts to said neighbor, who just happens to be [[TheFlintstones Betty Rubble]], tied up and gagged with Dad pretending to be her on the phone and hanging up. He then cheerfully rips the phone out of the wall and says "See you around the holidays, Betty!" before leaving.
** In the end, [[spoiler:the rest of the family steals the TV from him when a PottyEmergency kicks in, forcing him to watch the game with a pissed-off looking Barney Rubble.]]
* At the end of "A Dad Cartoon", Dad sends his car, which has gotten wrecked during his attempts to clean it, off to the repair shop to be fixed. It ends up flying off a cliff, revealing several other cars that have been "sent to the repair shop".
** The AmusingInjuries Dad suffers when he tries to fix the car himself.
* After an intelligence test deems him to be "average" in "Average Joe", Dexter decides to be a normal kid, starting with dressing up in [[LimitedWardrobe his only non-scientist outfit]]: his old baby clothes which make him look like a piglet. He then starts hanging out with a couple of punk teenagers. Dexter not only makes a fool of himself with his new (or old) attire, and [[{{Malaproper}} malaproping]] 90s slang, but the two teens actually think he's cool and let him hang with them without question.
* In "Sassy Come Home", Dee Dee finds it uncomfortable to wear her hiking boots and decides to take them off because she'd rather run around barefoot. Except Dee Dee's bare feet are so huge, as soon as she's de-shoed, she is greeted by Sasquatch, who is actually a shy kind-hearted soul who takes a liking to her because he has some big feet of his own. Unfortunately, Dexter is on the hunt for Sasquatch and ''mistakes his own sister for a baby Sasquatch'' as the two leave footprints in the forest.
** When Dexter first sets out on his Sasquatch hunt:
--->'''Dexter:''' Why is it taking so long? I should have been famous a minute ago!
* Dexter going to insane lengths to protect his lab in "The Old Switcharooms", where he and Dee Dee have been forced to switch rooms as punishment by Dad for misbehavior and roughhousing that caused of one of his prized trophies to get utterly demolished. Dexter, from past experience knows that Dee Dee would wreak havoc on his lab unsupervised. But this time, she's very courteous and leaves the lab alone, while paranoid Dexter all but trashes her room in the act of girding himself with the resources it has in a bid to stop her from doing anything destructive. Then Dad sees this and decides to one-up Dexter's punishment by making him ''sleep in the doghouse''. Dexter thinks the dog will pose no threat to his lab as an innocent animal. Cue the dog going on a rampage and leveling the place.
* In the episode "The Bus Boy", Dexter loses his pencil, which rolls to the back of the bus, where none of the kids go, due to it being dark and supposedly inhabited by a monster, who ate a kid named Billy Bloomberg many years ago. Various kids tell Dexter their own versions of the same story, including a hilarious fat German kid named Otto, who has a running gag of going "Mmmmmm" every time he mentions food.
-->'''Otto:''' No, is true! ''(Munches into food)'' I tell you just what happen.
-->''(Cue sepia-tone flashback of Billy Bloomberg dancing in the bus aisle around with food in his hands)''
-->'''Otto:''' Little Billy Bloomberg was just hosing about, und eating cookies. Mmmmmm. Ze bus hit a bump, and Bill shpill his hot cocoa. Mmmmmm.
-->''(The spilled hot cocoa lands on the bus drivers lap, and she screams)''
-->'''Otto:''' Driver panic, und almost hit ice cream truck. Mmmmmm.
** And at the end of the episode.
--->'''Billy:''' Pencil?
--->'''Dexter:''' You know, you raked it in right before I found you.
--->'''Billy:''' Oh, uh...that wasn't a licorice stick?
--->'''Otto:''' Licorice. Mmmmmm.
* Major Glory saving the day thanks to [[https://www.youtube.com/watch?v=FakBfSnRKjo Justice Fruit Pie]].
* In "Monstory," after Dee-Dee turns into a monster:
-->'''Dexter:''' ''(running around in circles)'' Help, help! Save me! I'm a genius, save the brain! Save the brain!
** Later we have the ''glorious'' '''kaiju battle''' between a transformed Dexter and Dee Dee, complete with them [[CallingYourAttacks dramatically naming the moves they use]]. Dee Dee (turned into a giant spider creature) even uses a '''TICKLE ATTACK'''...only to be sent flying by a TailSlap from Dexter (a Godzilla-like dinosaur monster).
* From "Techno Turtle", which pays homage to ''Series/TheSixMillionDollarMan'', we have this gem when the baby turtle has its accident:
-->'''Dee Dee''': Dexter, look at what you've done!
-->'''Dexter''': ''(stammering)''
-->'''Dee Dee''': [[ComicallyMissingThePoint You've ruined Mom's clock!]]
-->'''Dexter''': [[YouHaveGotToBeKiddingMe The clock? What about the baby turtle?!]]
-->'''Dee Dee''': [[TooDumbToLive Birdie? He's okay.]] [[BlackComedy His shell is cracking cause he's hatching!]]
** Later, when the turtle wedges itself underneath the refrigerator to carry it up to Dee Dee's room.
---> '''Mom''' (calling up to Dad, [[UnusuallyUninterestingSight seemingly unfazed]]): Honey! [[PrankCall The refrigerator's running]]!
---> '''Dad''' (from bathroom): And Prince Albert's in the can!
---> (Cue a certain monarch cheerily [[VisualPun popping out of the toilet]])
* The entirety of ''The Big Cheese'' in which Dexter can only say "omelette du fromage." Especially the ending when tries to get into the lab and [[GoneHorriblyRight triggers its security fail safe]].
-->'''Computer''': Password identification.
-->'''Dexter''': Omelette du fromage.
-->'''Computer''': Access denied.
-->'''Dexter''': [[FlatWhat Omelette duuu!]]
-->'''Computer''': Access denied.
-->'''Dexter''': [[AngryFistShake OMELETTE DU FROMAGE!]]
-->'''Computer''': Access denied. Be advised: Complete computer memory core meltdown engaged. All active experiments will be terminated and demolecularized. Laboratory will self-destruct in ten seconds and counting.
-->'''Dexter''': [[OhCrap OMELETTE DU FROMAGE!]] *Starts bawling*
-->'''Dee Dee''': [[BlackComedy That's all you can say~ That's all you can say~ That's all you can say~]]
-->'''Computer''': 3...2...1...[[StuffBlowingUp *Laboratory self-destructs*]]
* "Ewww'..That's Growth" is a funny episode in of itself, but what seals it is the ending. Dexter wants to ride the hot new Roller Coaster Ride "The Thing", but being Dexter, he is subjected to YouMustBeThisTallToRide. Dexter is able to make himself tall and is finally able to ride, except now he's so tall ''[[BlackComedy he smashes his head on the tunnel]]''.
-->'''Dexter''': [[TemptingFate This is the greatest day of my entire li-!]]
-->[[GoryDiscretionShot *POW*]]
-->''[[NoEnding The End]]''
* "Topped Off": Dexter and Dee Dee try their parents' coffee, and HilarityEnsues.
** First is the sour faces of Mom and Dad first thing in the morning, complete with GrossUpCloseUp.
** The OverlyLongGag of Dexter and Dee Dee daring each other to try coffee.
** When they finally try coffee, much of the rest of the cartoon is spent on Dee Dee jumping on the bed and Dexter working in his lab, both of them on a serious caffeine buzz.
** Dad's [[FauxHorrific horrified reaction]] to learning they're all out of coffee, and his melodramatic rant about [[MundaneMadeAwesome how important coffee is to grown-ups]].
** Mom's solution to the missing coffee? She opens a cabinet to reveal [[ShoutOut a Colombian guy with his donkey]], who just happens to have an emergency supply of coffee.
** In general, the fact that coffee is depicted as magically solving all of Mom and Dad's problems in addition to making them feel more awake, like when they're immediately dressed after they first sip some coffee and Dad gets ready for work and is suddenly in the car after two more sips.
** Dad's statement at the end of the episode.
-->'''Dad''': We still had coffee after all. (makes a worried expression) But what if we didn't?
* "You Vegetabelieve It":
** Dexter presents Dee Dee with a powerful plant food made from mackerel bones.
--->'''Dee Dee:''' What's a mackerel?\\
'''Talking Fish:''' I'm a mackerel! Now get me outta this mayonnaise jar!\\
'''Dexter:''' Uh, don't mind him, he's always like that.
** When one of the mutated plants ''growls'' at Dad, he remarks [[{{Understatement}} "That's strange."]] Then when he turns around and sees he's surrounded by plant monsters, he adds [[UnusuallyUninterestingSight "That's even stranger..."]]
** The ShoutOut to ''Film/LittleShopOfHorrors'' in the ending where Dad is stuck in the ground and feebly cries "Feed me!" over and over.
* "If Memory Serves". Mandark tries to learn Dexter's secrets in his memory saving invention, only to see a bunch of memories from Dexter's infancy that leave him confused, angry, and slightly traumatized.
** "Hooray for Dexter! He made potty all by himself!"
** "I am a baby! I am a baby! I am a baby!"
** "Mom! Dexter's wearing my tights again!"
* "Don't Be a Baby"
** Dexter's computer babbling like an infant after he and Dee Dee accidentally make the entire world much younger than they are. It helps that Creator/KathSoucie uses the same voice she uses for [[WesternAnimation/{{Rugrats}} Lil DeVille]] and [[WesternAnimation/TinyToonAdventures Sneezer]].
** Dexter [[EpicFail completely failing to catch his mother turned into a baby]] after trying to refute Dee Dee's claims that boys can't take care of children.
* The entire episode "Sister Mom", where Dexter has Dee Dee pretend to be their mother, is 11 minutes of good laughs.
** In general, seeing Dexter's mom prance around like Dee Dee and talk with Dee Dee's voice is just plain hysterical.
** Dee Dee as Mom tells Dexter to do a bunch of chores, but mixes them up in silly ways, like telling him to watch his homework, feed the trash, and water the cat.
** When the principal calls for another conference same time tomorrow, we see Dee Dee still impersonating Mom in addition to Dexter pretending to be Dee Dee and annoying Dee Dee by constantly saying "Dee Dee feel dumb" as well as the family dog made to look like Dexter, who just sits there panting and scratching his ear with his hind leg. [[UnusuallyUninterestingSight The principal and the school counselor both conclude that nothing is wrong with the family]].
* The movie ''Ego Trip'' has a few.
** One of the stupid villagers in the BadFuture ruled by Mandark fixes up a bed only to then go to sleep on some jagged rocks.
** When the different versions of Mandark and Dexter fight, Old Dexter and Braindark just stand there and call each other names.
** Dexter realizing he started a StableTimeLoop in the ending and subsequently giving up on figuring out how everything happened while trying to make sense of it.
* At one point in the episode "Streaky Clean", a naked Dexter shouts with glee that he's home free. A hippie couple see Dexter running naked and shouting "free" and they cheer him on due to assuming he's embracing nature.
* All of Dexter's insulting thoughts in "Mind Over Chatter" when he ends up making his thoughts audible to everyone, especially calling his dad a stubborn doody head and commenting on the lunch lady's mole.
* Dexter and Mandark fainting over Monkey and Ducky falling in love in "A Quakor Cartoon".
* The entirety of "A Failed Lab Experiment", if only for the awkwardness of Dexter's humiliation at seeing his parents and sister naked because of his X-ray goggles and his family being completely unaware that he's able to see through their clothes and therefore oblivious to how uncomfortable he feels around them.
* "Smells Like Victory" is just filled with funny moments.
** When Dexter's computer tells him about the military approaching his lab.
-->'''Dexter:''' Intruders? Who could it be?
-->'''Computer:''' Hello! ''Unidentified'' intruders. As in, I don't know!
** Because of some static over Dexter's transmission when he hears the general talk about their plan to destroy the evil filthy aliens, Dexter becomes mistaken that the military are the evil filthy aliens Grrr.
** The general's embarrassment that he and his entire army were defeated by a young boy.
* "Go, Dexter Family! Go!"
** The alien leader reading Dexter's thoughts.
-->'''Alien:''' My favorite color is orange? I like my soda pop without ice? My sister Dee Dee is a certified stupidhead?! This isn't the information I need!
** When the other aliens laugh at the alien leader after Mom [[DefeatByModesty unravels his robe]]. What sells it is how whiny and defeated he sounds.
-->'''Alien:''' Shut up. Shut up! Stop that laughing! That's it! You're all fired!
* The ending of "Dexter's Library", where Dexter is punished for making a mess of the library by only being allowed to check out four books instead of five, yet he acts as if the library banned him for life.
* The entire episode "Babe Sitter", especially Mandark acting out ''Franchise/StarWars'' with Lego-like figures of himself, Dee Dee, and Dexter and Dee Dee treating Mandark like a baby.
* All of "The Lab of Tomorrow", in particular Dexter accidentally annoying an alien watching television and the revelation that [[spoiler:Monkey was the narrator]].
* "They Got Chops"
** The OverlyLongGag about the specifications on where free judo lesson five is taught.
** Dexter and Dee Dee shouting "Ah, shiitake" when they fight.
** At the end of the episode, Dad chews out Dexter and Dee Dee for messing up the house and remarks that Mom will be angry with them when she gets home. Instead, Mom turns out to have also taken up martial arts and beats up Dad!
* Dee Dee's poetry succeeds in allowing Dexter to woo the girl he has a crush on in "Poetic Justice", but Dexter starts making up rhyming couplets on his own and ends up making up poems that insult Dee Dee. True to the episode's title, Dee Dee gets even by tricking Dexter into reading a poem that insults the girl he loves.
* In "Comedy of Feathers", Dee Dee assumes that the ostrich at the zoo is hideous because it's been mistreated and wants to rescue him. Dexter is about to correct Dee Dee and inform her that the ostrich is supposed to look that way, but he instead [[PassThePopcorn gets himself a hot dog, some popcorn, and a soda and prepares to watch Dee Dee make a fool of herself]].