* In the anime, the members of the Future Gadget lab have already used the Phone Microwave [[TradeSnark (Name Subject To Change)]] to gel-ify bananas so it's not the first time they've done it when we see them do it on-screen. However, the VisualNovel shows us the very first time Okabe & Daru manage to time-warp a banana. Their [[http://www.youtube.com/watch?v=ZTTvVkv_S9M&t=3m27s reaction to this is a wonder worth seeing.]]
** Someone even [[http://www.youtube.com/watch?v=MvOWtSQoQws made]] a StupidStatementDanceMix to it.
* "Urushibara Ruka. Delicate as an orchid, fair as a cheery blossom, the personification of feminine grace. And a dude. Tall as a willow, slender as a reed... a dude. Radiant in shine vestments. Dude. The sun dips low in a rosy sky, cicadas buzz... Ruka... is a dude."
* "Anata no banana puni puni da ne!" Your banana is so soft and squishy, by yours truly Mayushii!
* Any time Okabe goes off in [[CloudCuckooLander weird tangents of thought]], leaving everyone bewildered.
* EVERY time Okabe talks to his ImaginaryFriend on his phone, to the point that he has to come up with BlatantLies as to how his phone magically turns off when anyone besides him touches it when Kurisu grabs his phone and sees that it's off. While many of Okabe's paranoid and/or nonsensical rantings turn out to have [[ProperlyParanoid some measure]] [[TheCuckoolanderWasRight of truth]] to them, this is the one aspect of him that is purely fictional.
* There's one moment when he calls Kurisu using his self-appointed name for her, "Christina," except he draws it all out so long [[http://www.youtube.com/watch?v=a-GqSWsISVs it sounds like he's trying to sing opera.]]
* Moeka misspelling Hououin Kyouma as "Hoboing Coma" from Episode 2.
* This talk from episode 3:
--> '''Daru''': What do you want the text message to say?
--> '''Okabe''': How about "Christina is a pervert."
--> '''Kurisu''': Don't go pushing your luck jerkwad.
--> '''Daru''': How about I just split the difference: "Okarin is a pervert."
--> '''Okabe''': What!?
--> '''Kurisu''': Atta boy! Good thinking!
--> '''Daru''': Firing torpedoes, captain!
* Okabe & Makise getting into an argument over [[http://www.youtube.com/watch?v=K8Dli1hX3jo which of them is the bigger pervert.]] [[InherentlyFunnyWords "Hentai tensai shoujo yo!"]]
* Any time Daru keenly takes notice of a DoubleEntendre, since the viewers usually notice them at the same time.
** Also, any time Daru compares what's happening in-universe to a LN or an anime, considering the show's source material.
* Any time Moeka talks about how much FB means to her because to a lot of people interpret it as "Facebook"
* Episode 5:
** While serving a microwaved banana; "Enjoy, I demand it!".
* Kurisu's tsundere moments. For example, this little gem in episode 12.
--> '''Kurisu''': "I-I'm not... I'm not grateful to you. I'm just being polite..."
--> '''Okabe''': What kind of tsundere is that?
--> '''Kurisu''': [[IResembleThatRemark I'm not a tsundere! *shove*]]
* Okabe discovers, in one world line after he sends a D-mail, ''[[CrotchGrabSexCheck ...the hard way...]]'', that Ruka is now actually a girl instead of a guy wanting to be one.
* Episode 14:
** "Right now, What you want most is your own personal fork."...look at Kurisu's reaction.
--> '''Kurisu''': "Screw you future me!"
*** The GratuitousEnglish makes if even funnier. "My fork" and "my spoon" indeed...
*** Apparently "my fork" and "my spoon" was at some point 2chan slang for "lover" and "friend", respectively. No wonder Kurisu was so pissed with herself.
* Episode 15:
** Okabe's reveal of his @channel handle, "Hououin Kyouma", which everybody already knew.
** Okabe's attempt to communicate with a foreign looking person.
--> '''Okabe (In English)''': [[SurprisinglyGoodEnglish Hey Mister, I am Mad Scientist! It's so cool! Sonuvabitch.]]
** In the Funimation dub, instead of GratuitousEnglish, he tries to [[Film/{{Airplane}} speak jive.]]
--> '''Okabe''': Word to your mother!
* Episode 18: Kurisu recognizing that Okabe is a virgin.
* Episode 23: Okabe describing [[spoiler:his future self]] as "an otaku who read too many bad light novels". This is sadly lost in the dub.
* Episode 25: The return of GratuitousEnglish Okabe, only this time he tries on American airport security. It goes slightly less well.
--> '''Security Guard (In English)''': "What's your purpose here?"
--> '''Okabe (in Japanese)''': "I guess I have no choice..." (switches to English) "I am mad scientist! United States! Chaooooossss! And invade![[EvilLaugh *begins to laugh maniacally*]]
--> [[GilliganCut Cut to Okabe being handcuffed.]]
** '''''[[http://www.youtube.com/watch?v=46FXWkSrbfE IT'S A MOTEL!!!]]'''''
** What does Moeka want? "MACADAMIA NUTS MACADAMIA NUTS MACADAMIA NUTS MACADAMIA NUTS... anything but"
** Kurisu in the cat maid outfit.
** If you're a Los Angeles native, it's pretty amusing to see familiar places in this episode. The details of the Staples Center, LAX, and the LA Convention Center are spot on.
* From the movie, Kurisu mistaking Daru's underwear for a lab coat.
* From the True Ending in the VN, [[spoiler: when Okabe encounters Beta World Suzuha]]:
-->[[spoiler: '''Suzuha''']]: There lies a worldline unaffected by any attractor field. A worldline knows as [[ArcWords Steins Gate.]]
--> '''Okabe:''' But that's the chunni name I pulled out of my ass! It doesn't even mean anything!
* From Faris' ending, where [[spoiler: Okabe has "lost" his ability to play Rai-Net]]:
-->'''Faris:''' I didn't think you'd get this poopy, ''nya''...
-->'''Okabe:''' Well, excuse me for being poopy.
* Okabe using his Reading Steiner ability to mess with Kirisu in an optional phonecall:
-->'''Okabe:''' Before I time leaped, you made a tearful confession. You said, "I'm an @channeler, a Nicojunkie, [[BlatantLies and a camwhore who posts tits]], but will you still accept me as your assistant?"
* In Episode 10, when Mayushii is discussing cosplay with Ruka:
-->'''Mayushii:''' Small boobies will have their day!
-->''Kurisu [[SpitTake chokes on her drink.]]''
* The Somei Eichi no Cognitive Computing shorts are usually very amusing
** The first one has the [[BuffySpeak computer upa AI thing]] help out [[LethalChef Kirisu]] cook. Both Okabe and Daru react [[OhCrap appropriately]]. It leads to them making chocolate burritos which Okabe tries to force Daru to try first. It ends in Obake admitting they taste great.
** The third one has Nae calling out Obake and Daru on their limited wardrobe, causing them to ask Kirisu for a make over. When she has the computer Upa help. It creates some really ridiculous outfits for Daru. And for the audience and Kirisu's shock, some outfits that really fit [[SheCleansUpNicely Okabe]] to the point Kurisu can't breathe.
* After receiving a text, Okabe runs back to the Lab, then walks in on Mayushii and Kirisu in the shower. He's booted out, and then pulls out his phone...
-->'''Okabe:''' "It's me. We have a problem. I'm under attack from Mongolian Spot and Ditzy sisters. They're going directly after my sanity, a bold move against the insane mad scientist Hououin Kyouma.
-->"This is the strongest offensive I've encountered so far. I realize now that vulnerability itself can be a powerful weapon. They're pulling out all the stops, and I don't think my pants can take it.
-->"Give in to the temptation? Nonsense. I could never do that. They're fellow lab members, my loyal assistant and my childhood friend.
-->"...Must I? Is it truly the will of Steins Gate that I give in? That I raise my hand against my closest companions? If so... then how cruel the fates be!
-->"El... Psy... Kongroo!"
* Okabe and Ruka's painfully awkward date.