- Yuno's Crazy Awesome Yandereness is cranked Up to Eleven for the entirety of the show (also parodied for all it is worth), and it is glorious!
- Yuki's first line in the series as he watches an episode of School Days.
Yuki: Wow, that girl sure is crazy and scary! It's a good thing nobody like that exists in real life!
Yuno: I just traveled to a parallel universe and killed myself in order to take my own place! And I did it all for the sake of love.
- This dialogue from Episode 1.
MurMur (to Yuki): Hey, how's it goin'?
*beat which shows her standing on an oil drum, then cuts to Deus Ex Machina staring, then back to her and Yuki*
Deus: Are you standing on an oil drum?
MurMur: It's where I keep all my corn cobs.
MurMur: I like corn.
Deus(in a completely deadpan tone): Fantastic.
- Yuno completely misinterpreting a conversation between Yuki and Tsubaki, assuming that Tsubaki is trying to seduce him. She was sharing a banana bread recipe.
- Any scene involving Dave and Gary.
Gary: "This year, Dave, I'm going to coat your biceps in chocolate frosting."
Dave: (confused) "How will that help us win the bake-off?"
Gary: "Win the what now?"
- Yuno: It's too much! I can't take it anymore! I MUST GLOMP YUKI! *glomps Yuki, and in doing so, saves him from an explosion.
Yuki: "STOP SMELLING MY UNDERWEAR!"
- When Yuki's mom meets Yuno:
Yuki's mom: "And just who might this be?"
Yuno: "Hello ma'am, my name is Yuno Gasai, and I'm an exterminator."
Yuki's mom: "I don't remember calling for an exterminator. What are you here to exterminate?"
Yuno: "Your son's virginity."
In that case, have at it.
Narrator: "Parental consent is... good."
- When Minene is making demands:
Random student: "Pedophile."
(cue part of a school building exploding)
Minene: "SHUT UP AND LET ME FINISH!"
- Minene's Unwanted Rescue in Episode 5:
Minene: Of all the people to set me free, why did it have to be him?
Kurusu(on the phone): Hey mom, I saw some boobs today!
- Yuno decides to take the crazy even further.
Yuno: I won't let any of you be friends with Yuki! Nobody can be Yuki's friend but me! If anyone even tries to get close to Yuki I'll f**king kill them!
Aru: "Kosaka. When's the last time you washed your feet."
Kosuka: "You're supposed to wash them?"
- While in the pool:
Yuki: Yuno your bikini top accidentally came off!
Yuno: Nope. (beat) Hold me! (hugs him while topless)
Pool Attendant: For gods sake women make yourself decent. (hands her top back to her)
Yuno: Shut up and let me be naked!
- Yuno's opinion of a woman who's in denial about her son being in a coma: