* Sensitive Ben as Humongousaur:
--> "I think you're being deliberately ''hurtful!''"
** Also his TransformationNameAnnouncement, which he ''sang''. ♪ Humongousaur! ♪
---> ({{Beat}})
---> '''Kevin:''' Never do that again.
---> '''Humongousaur:''' Just trying it out.
** Actually, many of [[TheStoic Kevin's]] reactions to Sensitive!Ben.
* Right after Ben talks about how secretive the Forever Knights are in "Andreas' Fault", we see that [[spoiler:our friend Jimmy often plays ''VideoGame/WorldOfWarcraft'' MMO with one of them.]]
* Also in "Andreas' Fault":
-->'''Fan:''' Ben, Ben, Ben, Ben, Ben, Ben, Ben, BEEEEEEEN, Ben, Ben, Ben??!!!
-->'''Ben:''' (angrily) '''WHAAAT?!!'''
* From the episode "Hero Time":
-->'''Overlord:''' [[ThatManIsDead Captain Nemesis is dead.]] From now on, call me, '''''OVERLORD!'''''
-->'''Goop!Ben:''' How about we call you ''a good therapist?''
* This exchange from the episode "Reflected Glory":
--> '''JT:''' *leaning forward from the back seat* So, what's it like being you?
--> '''Kevin:''' *deadpan* Awesome.
--> '''JT:''' [[{{Squee}} I knew it!]]
* At the end of "Reflected Glory": "Even the Internet thinks you're lame."
* In "Fame" when Ben finally gets the Ultimatrix to work and turns into Chromastone:
--> "Wasn't even sure if I still had this one."
* [[spoiler:Kevin's [[TheTalk explanation of where baby Alien X's come from]] to ten-year-old Ben.]]
--> "What? I had to learn about astrophysics on the street!"
* Ben's invitation for Kevin to enter the ship in "The Enemy of My Enemy".
--> "Doofus, you have the powers of a ghost! Just come in already!"
* Darkstar's [[AntiClimax un-victory]]. [[EpicFail He really thought it would be that easy]]?
* In 'Revenge of the Swarm"
-->'''Kevin:''' Then how do you explain ''this''!? (''[[ItMakesSenseInContext holds up toupee]]'')
* Paradox's ominous warning concerning the story arc in Ben 10,000 Returns is ended [[MoodWhiplash with a cheery goodbye]].
* From "Moonstruck", Young!Max gets a great one by screaming out Kevin's catchphrase: "My ride!"
* ''Everything'' involving Rath in "Prisoner 775 is Missing". At one point he yells at ''gravity''. He tops himself by threatening the hole that he made after falling out of the sky.
-->'''Rath''': Lemme' tell you somethin', stupid Rath-sized hole! Rath will destroy you! *attempts to stomp on the hole*
-->'''Gwen''': Oh, for crying out loud. Ben!
-->'''Rath''': *pauses, then kicks dust at the hole* What?
-->(Gwen gives him a stern look)
-->'''Rath''': Sorry. *turns back into Ben*
* "Prisoner 775 is Missing" begins with the PowerTrio [[DiscussedTrope discussing]] [[TransformationNameAnnouncement why Ben yells out his aliens' names when he transforms]]. Later in the episode, Ben turns into [[TheUnintelligible Wildmutt]] to track Prisoner 775. He snarls indecipherably, and then a disembodied voice [[TransformationNameAnnouncement cries out his name]]. Then the camera zooms out to show Gwen with her hands cupped in front of her mouth.
-->'''Gwen''': What? He can't talk! Someone had to do it for him!
** Becomes a BrickJoke when Gwen complains that she was going to do it for Ultimate Wildmutt, who can talk and did it himself.
* After failing to turn into Humungousaur twice (arguably due to [[UnspokenPlanGuarantee saying its name first]]), Ben deliberately names the wrong alien and gets the one he wanted.
* When Ben first goes [=ChamAlien=], he shouts "Overkill!" causing Kev and Gwen to roll their eyes.
** Turns out to be a BrickJoke from the beginning of the episode.
* "Double Or Nothing" gives us "[[ShowWithinAShow Ben 10 Live]]" -- which, in the grand tradition of "[[WesternAnimation/BatmanBeyond Batman the Musical]]" and "[[WesternAnimation/AvatarTheLastAirbender The Boy in the Iceberg]]", is suitably a total farce. The best part, however, would have to be the [[LargeHam overactor]] playing Vilgax:
-->"Attention Earthlings! I am Vilgax the Conqueror, here on my moon base... [[DepartmentOfRedundancyDepartment on the moon!]] Surrender, or I shall destroy you! Muhuhuhahahahaha!"
** Even better, our ''actual'' heroes are in the audience and immediately snark about it.
--> Kevin: "Moon base?"
--> Ben: [[DeadpanSnarker "Yeah. I hear it's on the moon."]]
** Amusingly, Gwen is totally on board with thinking the show is great until the "Gwenettes" show up and do a showgirl line. [[DistractedByTheSexy At which point Kevin decides the show is even better, but quickly backslides so Gwen doesn't notice.]]
* Kevin trying his hardest to remember the name of some show about kids who saved the world [[WesternAnimation/CaptainPlanetAndThePlaneteers with the power of recycling]].
** And later trying to remember the name of that show with [[Series/TheXFiles two secret agents investigating the paranormal, one skeptical and one believing]].
** And even later narrating the episode like a LemonyNarrator.
** Kevin's exasperation with the others for not seeing the similarities and wondering if he's the only one who watches television.
* Ben/Big Chill tries to play to on Ma Vreedle's sympathies.
-->'''Big Chill''': [[ContinuityNod Wait! I'm a mother too]]! [[CommonalityConnection So, I know what you're going through!]]
-->'''Ma Vreedle''': Where are the kids?
-->'''Big Chill''': Out in deep space somewhere. Maybe this wasn't the best example.
* "The Eggman Cometh" features Dr. Animo spreading monsters under his control through town by selling what look like ordinary chicken eggs. Along the way, we get the gem of seeing Dr. Animo do a commercial for "Animo Farms" dressed like a farmer and attempting a really bad Southern accent. [[TechnicallyASmile The pained-but-still-on-camera look on his face when the commercial is over says it all.]]
--> Animo (furious): "Cut! Print! No retakes!"
* Azmuth being challenged to take the sword back from Sir George.
-->'''Azmuth:''' You think I can't take it? [[BadassBoast I am Azmuth, creator of the Omnitrix, sculptor of worlds, the smartest being in three galaxies.]] Of course I can take it.
-->'''{{Beat}}'''
-->'''Azmuth:''' Ben Tennyson, take it from him.
* [[spoiler: Gwen!]]Rath from "Inspector 13". "LET ME TELL YOU SOMETHING, ANNOYING VOICE THAT NO ONE EVER SEES!"
** Also, Gwen asking if Ben ever checked to see if he got their powers while they had his, and Ben realizing what he just missed out on.
** The Techadon [[AttackPatternAlpha Insectoid Defense Scenario]].
** [[spoiler: Kevin turning into Wildmutt while driving]].
** Don't forget [[spoiler: Gwen as Upchuck and Kevin as Nanomech]].
** This exchange:
--->'''Ben''': Gosh, am I stupid!
--->[[spoiler:'''Gwen!Rath''']] ''(offscreen)'': LET ME TELL YOU SOMETHING, BENJAMIN [[EmbarrassingMiddleName KIRBY]] TENNYSON: EVERYBODY KNOWS THAT!
* Charmcaster showing Darkstar the door at the end of "Couples Retreat."
** It may be CharacterDerailment, but Darkstar is just [[WhatAnIdiot so]] [[TooDumbToLive DUMB]] in this episode in general that it crosses the line into being amusing, especially with WilWheaton [[HamAndCheese hamming it up.]]
* Jury Rigg taking apart the brakes of Kevin's car in "The Eggman Cometh." Made even better by Kevin's lack of brakes lasting the entire episode.
** The end of the episode, when the reversal of Animo's ray turns the dinosaurs into [[spoiler:chickens]].
* While most of "Night of the Living Nightmare" was scary, it had a funny part. Lodestar losing his head.
--> "Oh wait, your ears are over here and that's why you can't hear a thing I'm saying anyway..."