Sarcastic Confessions in Anime and Manga.
- In Black Butler, some torturers tell Sebastian (who is a demon disguised as a butler) that he'd better confess or they'll hurt him. He admits that he was responsible for the Black Death, but since that was 500 years ago, they don't believe him.
- Bleach: While Zangetsu watches silently from the sidelines, Ichigo fights his inner Hollow. The inner Hollow tells him that he is the real Zangetsu. He's mocking Ichigo at the time, having taken Zangetsu off Ichigo and placed an asauchi in Ichigo's hands instead. It takes Ichigo most of the fight to pay attention and realize he needs to prove himself to the silent Zangetsu to deserve another chance. Once Zangetsu accepts his resolve, Ichigo doesn't simply taken back the form of his sword, he converts the inner Hollow to his color scheme in the process. The real confession that Ichigo never once cottoned on to is that the inner Hollow really is the real Zangetsu. Old Man Zangetsu was his Quincy power and the inner Hollow was the true form of his Shinigami power.
- In Code Geass, Lelouch Lamperouge tells Euphemia about his Geass ability being able to force anyone he uses it on to do absolutely anything he tells them to. As an example, he jokingly tells her that if he orders her to kill all Japanese people, she would have to do it. Prior to this incident, he was able to use his Geass ability at will, but during this conversation, he loses the ability to control it, and it stays on permanently. Which means the sarcastic order he gave her became an absolute one, and she went out to immediately order the slaughter of innocent Japanese people who she had been trying to help.
- In Dance in the Vampire Bund, after noticing odd behavior from Princess Mina Tepes in the month since a fearsome attack on her domain, Akira Regendorf asks if she is hiding anything from him and is told "I'm not really Mina, I'm an impostor... I traded places with the real Mina and sent her off into the darkness. She is gone now and will never come back." Even as Akira chides the Undead Child before him for her tasteless joke, the actual Mina Tepes is hiding in a New York alleyway having escaped Duke Rozemann.
- Doraemon: Nobita and the Steel Troops have Nobita and Doraemon being caught in Riruru's steel troop invasion scheme after sneaking out at night from being suspicious, where they barely survive a robot attack before escaping back to Tokyo from the Portal Pool, before a Portal Splat leaves Riruru and the hostile robots stranded on the other side. After the entire night's shenanigans, Nobita inevitably dozes off in class the following day, and when Sensei reprimands Nobita, the latter tiredly replies with, "I was too busy saving the world". Cue Nobita being told to stand in the hall while the entire class laughs.
- Kida does this for Mikado in Durarara!! when some of Mikado's classmates overhear them talking about Mika staying at Mikado's apartment.
- Early in FLCL, Noata asks Haruko what she is. One of her sarcastic responses is "I'm an alien".
- Subverted in Haruhi Suzumiya. Early in the series, Kyon calls up Haruhi to hang out alone at a local café and uses the opportunity to reveal the truth of everything that's happened so far in a long conversation. Despite him being sincere, she still does not believe Kyon because he had already established himself as the Deadpan Snarker by that point, and is annoyed that he wasted her time.
- Chapter 163 of Kaguya-sama: Love Is War has Kaguya admit to the rest of the student council that she and Shirogane started dating over winter break before claiming that it was a prank (as the rest of the chapter had been about Fujiwara trying to come up with a way to prank her as a lead in for a surprise birthday party). Made even better by the fact that she technically never even said it was a prank; she just held up the pranking sign that Fujiwara made and never once denied her claim. She tells Shirogane afterwards that she wanted a chance to show off their relationship while still keeping it a secret, and this proved to be the perfect opportunity.
- Maria no Danzai: When Kinugawa questions Maria on her last conversation with Shikimi before she disappeared, Maria pretends to blame herself for Shikimi's disappearance by claiming she chose her words poorly, when in truth Maria not only picked her words with the specific purpose of driving Shikimi into Skipping School, she has already murdered her.
- This forms part of the central Running Gag of The Maid I Hired Recently Is Mysterious. Yuuri continuously accuses Lilith of some plot or another, and she can't help falsely confessing to them as a way of teasing him. More often than not, it backfires, with Yuuri ranting that this explains why he can't stop thinking about Lilith, his heart races every time he sees her, etc., leaving Lilith as the embarrassed one.
- Negima! Magister Negi Magi, chapter 82:Chao: You want to know my real identity?
Setsuna: That's right!
Chao: Hehehe... sometimes I'm a Chinese inventor full of mystery. Sometimes I'm a treasure box inside the class, a Mad Scientist. Sometimes I'm the number one genius inside the academy, and sometimes I'm the boss of the popular Chinese stand "Chao Bao Zi". My real identity is... AN ALIEN FROM MARS!!
Setsuna: WHAT KIND OF JOKE IS THIS!!- During the Magical World arc, we find out that the layout of the world they are on is similar to the planet Mars, and that "joke" that Chao made earlier really IS a Cassandra Truth. Chao never lies, but she's perfectly willing to tell the truth in a way that would make normal people dismiss it as a joke.
- In a filler episode of One Piece, Zoro is captured by the Marines and questioned by an officer about how they infiltrated their base. He sarcastically tells them the truth—they dropped in from the sky with the help of a giant octopus balloon. The officer thinks he's mocking him.
- The Quintessential Quintuplets: Chapter 21 (Episode 8 of the anime) establishes that Yotsuba, the fourth quintuplet, is a lousy liar. She has a brief talk with Fuutarou while telling him the reason she takes his side over her sisters (he's been hired as their tutor but they don't want to study) is not because she wants to get better grades, but because she likes him. Then she immediately tries to pass it off as a joke to prove that she can lie. Come Chapter 90, turns out she wasn't lying at all when she said that.
- Shimoneta: In episode 8, Kosuri openly admits her infatuation with Ayame by making it seem that she's joking. Ayame doesn't become aware that she's serious until Kosuri nuzzles her breasts during the furo scene in episode 12. Her reaction makes it clear that the feeling isn't mutual.
