After the reveal of "The Event" in episode 10 of Kamen no Maid Guy, God goes for the Brain Bleach and smothers the entire scene in heavy downpour, presumably to wash away the memories of having ever seen it.
In One Piece, most of the male crewmembers suppressed their memories of seeing Kokoro in her mermaid form◊, which is later acknowledged when they claim Camie was the first mermaid they've met. This is lampshaded by Chopper, who notices that peoples memories about Kokoro disappear when they meet Camie.
Mirajane decides to imagine what Elfman and Evergreen's child would look like, then is traumatized.
In the first OVA, Natsu, Gray, and Gajeel accidentally see Makarov naked, with accompanying horror, disgust and destruction. "My eyes!"
Baba oobaasama in a swimsuit. Gets this quote,
Chapati: With that single strike, all the excitement in this arena has when down the drain.
Ichiya's fight in the Magic Games cause people to throw up.
In the Daily Lives of High School Boys skit "High School Boys and Panties", Motoharu pretty much cried out for brain bleach after peeping Ringo-chan's panties — not that her panties were any special, but out of Heel Realization about doing something that can't be undone. Specifically, he (and the rest of student council) tricked Ringo into flaunting her panties. There was so much Heroic BSOD that he skipped school for three days.
X-Men has a few during Joss Whedon's run, the most specifically invoking this trope being:
Emma Frost: J. Jonah Jameson'll be tongue-kissing Spider-Man before the X-Men catch a little public favor. Shadowcat: Why do you insist on saying things I can never unhear?
A truly horrific example: Alan Moore's "Love and Death" arc on Swamp Thing started with Abby Arcane Cable ripping off her clothes, trying unsuccessfully to burn them ("She had become a little crazy by this time.") showering heavily and then scrubbing herself bloody with a vegetable brush after she learned that her husband Matt was really an animated corpse containing the spirit of her evil uncle Anton Arcane. Unintended necrophilia and incest? Yeah, all the brain bleach in the world won't wash that away.
And she thinks, "How long have I been married to...?" And she thinks, "How many times did...?" And she knows what the bad thing is, and where the stench is coming from.
To give people ample warning on that spoiler: scrubbing her flesh until she passes out with horror and blood loss is so far removed from what's under the spoiler, that people reading the comic frequently forget that Abby likely mutilated herself in an unsuccessful attempt to get clean after her realization. You have been warned.
Amelia Rules: Amelia is kind enough to offer the readers time to apply Brain Bleach to erase what images Ninja Joan's story about how she caught her fellow ninjas skinny dipping might have conjured in their minds:
Ninja Joan: They were N-U-D-E naked, and swimming in this pond. So I get an eyeful of this scene, and like, totally freak. Aaagh! My eyes! My eyes! So they all go running behind this shrub, screaming Get out of here! Get out! Amelia: Wait a second, if they were in the water and then behind a shrub, you didn't really see anything, right? Ninja Joan: Weeell... it was a very small shrub. (beat) Amelia: (voice over) Why don't I give you a minute to erase that horrible image... Okay, ready?
There's a moment like this in one strip where a bored Jeremy complains that "nothing ever happens around here," which prompts his dad to take his shirt off and dance around (all 300-some pounds of him) singing, "Shake your bon-bon!" Afterward Jeremy goes to wash his eyeballs out.
In another example, Jeremy peeks around the corner only to catch his mother in a leotard practicing for her Zumba dance class (with her boobs jiggling in the air). He promptly asks his dad if there's a way to erase an image burned into his retina.
And the time his mother commented on Stairway to Heaven, which he was strumming on his guitar: his parents had that song playing when he was conceived. Cue Jeremy with his head under the tap, running hot water into his ear.
This happened to his mom too in one strip. After she commented that a song he was listening to was "catchy", he showed her the lyrics. In the final panel, he told his dad, "I'm grounded for buying a CD and mom is at church for liking it."
Vegeta: This is like looking at Freeza in the shower — Wait he's always naked.... (Vegeta screams in disgust at the mental image)
One really funny FanFiction involves Batman, Barbara Gordon, Alfred, and Robin discovering someone had posted disturbing Joker×Batman slashfic online for everyone to read. Barbara and Dick react very badly to reading it (and no doubt the reader as well, unless they likethat sortof thing):
Barbara: Someone sent me some kind of... sick... gay... porn story, starring Batman and the Joker. And now I can't get it off my screen! Dick: Eased out of his violet pants... fingers through green hair... tight against the wet spandex... Oh GOD! "His turgid ivory white manhood"? Jesus! I think I'm gonna be sick!
There's some Fridge Brilliance and Fridge Horror when you remember the popular theory that the Joker raped Barbara after he crippled her. So she probably has seen what's contained in that last spoiler and in an extremely horrific context.
Utsuho: (referring to Nitori) She's really shy! It's so cute! You have to see it sometime! Ryan: (thoughts) Well, now you have a whole bunch of images of shy lolis running through my mind. Oh, that can not be healthy. Brain bleach, gooooooo! *THWACK!* Utsuho: Ah! Y-you just punched yourself! Ryan: (thoughts) Yep. Brain bleach tastes suspiciously like copper, by the way.
Sam: Your parents... well, our parents...are all upstairs. Jet: "Upstairs"? But there's nothing you've got upstairs but... (fridge horror as Jet realizes what their parents are doing...) Get over here, Sam. You fucking owe me vodka.
In The Hill Of Swords, Louise has this reaction after seeing her sister acting out a sexual fantasy while calling Shirou's name.
Due to its infamous nature, Cupcakes tends to appear in other fanfics as a story In-Universe, a nightmare of one of the characters, or a horror movie. Most of the time, it'll get this reaction from the characters who witnessed it in some way, shape, or form.
In a Meta example, The Light in the Darkness has gained a reputation among the fandom for being used as effective Brain Bleach if one is still suffering psychological trama from reading Cupcakes.
Another example in Once Bitten, Twice Shy. After Applejack learns...through experiment...the significance of a unicorn's horn, she sprints away from Rarity planning to scrub clean her hoof and her brain. It takes the poor girl several pages before she can look a unicorn in the face without flinching.
In Estrus, Rarity finds out that Twilight doesn't know what being "in heat" means, and gathers Rainbow Dash, Fluttershy, Pinkie Pie and Applejack in the Carousel Boutique to discuss how to break it to her. The resulting conversation covers how each of them learned about the birds and bees, their first times in heat, and how each chooses to deal with the symptoms. Rarity has this to say about it:
Rarity: Step lively now! The sooner we get to Twilight's and teach her about the facts of life, the sooner we can all go our separate ways and clop or stab ourselves in the eyes or whatever it is we need to do.
In Address Unknown, Rainbow Dash comes by the library and learns that Twilight fell asleep while studying and left a mess on the floor, which Spike is now cleaning up. She recognises the smell for what it is, and then she learns that Twilight's been spending time with Derpy the last few days...
Derpy plus Twilight should NOT equal that mess on the floor, but yet there it was — if they had been spending a lot of time together, then this... Her brain forced an image into her head that made her wish that heads came with an "un-see" button.
Edgeworth: This is just like that one episode of the Steel Samurai where he meets the Pink Princess! WHEEEEEEE!!!! [Back to the real world] Phoenix:(Doctor, I'd like the part of my brain responsible for that image lobotomized, please...)
In the Pony POV Series, the Dark World!Mane Six release Celestia and Luna from their prison only for them both having been reduced to fillies and Celestia having lost her memory and thinks she just came back from Paradise Estate where Discord was actually good. After she's told that the heroes woke her up from a long sleep she has the following response:
Incidentially, Harry Potter actually has Brain Bleach, in the form of Memory Charms. Obliviate!
In The Girl Who Loved, Harry happened to fall into a Jusenkyō spring shortly after Sailor Moon had drowned in it. Her spirit came out of the pool and after spotting girl-Harry and briefly thinking how hot her body looked on somebody else, she equated it to perving on your twin and wondered if ghosts could use brain bleach.
In The Problem With Purity Dumbledore's phoenix Fawkes suggested poisoning Ron in his sleep after he made a particularly crass remark to Hermione, which resulted in the following mental exchange:
Hermione: But sadly, if we poisoned everyone who annoyed me, the wizarding population would be decimated in no time. You don't want to be responsible for the destruction of the wizarding world, do you? Harry: From poisoning Ron to the death of the wizarding world. I know the Weasleys are prolific, but that's a scary leap. Hermione: Harry, I positively refuse to think of him as the father of the wizarding world and may have to go wash my brain out with soap at the thought.
In Heart and Soul Harry commented to Draco Malfoy that "Speaking this much to you all in one go makes me want to go bleach my brain."
In An Elf's Lament Harry had a brief vision of Draco Malfoy, Dumbledore and Santa Claus in a threesome and wondered if he could bleach his own brain.
In One Wizard Too Many Harry and Hermione were discussing a suitable location to submerge the golden egg. When she mentioned that she'd heard that the "price of admission" to Dumbledore's private Jacuzzi was "a bit steep" Harry replied "Ugh, need some brain bleach here!" In a later chapter, after Harry said he'd be sending her his psychologist's bill and she commented that a hug from a load-bearing column she'd transfigured into a likeness of Molly Weasley would "make it all better" he replied "Okay, now that's the psychologist's bill and an invoice for some brain bleach you'll owe me."
In Souls Abound Shacklebolt and Tonks discovered while Horcrux hunting that Sibyll Trelawney and the elderly caretaker of the Riddle house were expecting a baby and Tonks wondered if she could get Amelia Bones to obliviate her after they got back — for "security reasons."
In Veela Heart Sirius, Remus and Snape accidentally witnessed Harry and Lucius Malfoy being a little amorous and Snape started muttering about "getting Albus to erase the memory, and perhaps some brain bleach."
In Harry Potter and the Wizard's Oath after a naked Dumbledore was spontaneously transported to the hospital wing, Hermione asked Madame Pomfrey if the wizarding world had an equivalent to psychotherapy because she "felt she had seen something that may scar her for life."
In Dear Order Harry mentioned in a letter that he could use the robes Dumbledore sent him for his birthday as a defense against Death Eaters someday because "no one can see electric blue robes with pineapples and bananas on them and remain unscarred," prompting Ron to reply "I can't even imagine them and remain unscarred."
In Surrender many students find themselves wanting an obliviate after Harry and Tom dose the Hogwarts staff with veritaserum:
TG: what TG: rose TG: what the fuck TG: why did you say that TG: why cant i unread it TG: holy shit hand me the bleach and the steel wool gonna scrub my brain right to the stem TG: too bad kim and aggie are telling me that shits never coming off TG: thats a permanent black mark on my hippocampus i hope youre happy
Since 1999 I've been carrying a blue pill in my pocket, holding onto it for the moment when I'd truly need it. The pill, I was told, would instantly erase the memory of any movie — but just the one movie, just the one time. I was tempted to take that pill after Freddy Got Fingered. I had the pill in hand as I walked out of every other Adam Sandler movie of the last decade. But I hung on to it, knowing something even worse was going to come my way one day. Midway through Movie 43, I knew the day had come. As the credits rolled with the inevitable blooper scenes of actors breaking character and inexplicably laughing when nothing funny is going on, I swallowed that pill, hoping to erase instantly all mental images of what had just transpired. It didn't work. The !&$@*! thing didn't work!
Jack Carter, in the 1970 version of Get Carter, accidentally discovers that his niece — who is quite possibly his daughter — was cajoled into porn, when he idly turns on a projector in the house of a local gangster's moll. As the film runs, tears well in his eyes; he takes his mind off this by embarking on an orgy of revenge.
Ace reacts to the realization that a woman who tongue-kissed him is a man in disguise by vomiting his entire stomach's contents into the toilet (using a plunger on his face), burning his clothes, and then sobbing in the shower. That scene was a spoof of The Crying Game. And even came with the song (as sung by Boy George) in the background. The next scene, he's in his car, chewing a whole package of Big Red gum.
There's more to that. When Ace strips her down to her underwear but she still appears to lack the evidence, Dan Marino calls his attention to reveal one more detail. Ace strolls back to her and turns her around, revealing that she still has her equipment...on her ass. Cue the SWATs doing the retching routine. And they even put in the same music as when he had his own revelation!
Johnny's reaction to Sue stripping down in Fantastic Four: "I'm gonna need therapy."
Played dead straight in the Korean revenge thriller Oldboy. Near the end, Oh Dae-su learns the horrific extent to which he has been manipulated throughout the story. He undergoes hypnosis in order to forget it.
Serenity: He doesn't witness it, but Mal is nonetheless horrified by Kaylee's description of her, um, dry spell:
In a Star Trek: New Frontier novel, after Calhoun and the bridge crew have been informed by a sentient computer that a level 3 diagnostic is like a head to toe gynecological exam, Soleta raises her hand and asks the captain for permission to forget she just heard that.
In Paths Not Taken, John Taylor intuits what disturbing source the Time Tower draws its power from. Having learned this, he says that he's seriously considering scrubbing out his frontal lobes with steel wool.
In the Magic: The Gathering novel Planeswalker, Phyrexian newt Xantcha tells something-close-to-omnipotent Planeswalker Urza that knowing the name of the Ineffable (Yawgmoth) is something so terrible he ought to have it burnt out of his mind. So he does. Literally. With fire. In his mind.
In Unseen Academicals, Glenda views a stored memory of Ax Crazy orcs in battle at the Department of Post-Mortem Communications. The memory is three seconds long, and she spends the several seconds to follow trying to excise the previous three seconds from her own.
Played with in The Truth, when a Personal Dis-Organizer imp asks if it should erase its memory of events recorded for its previous owner. While holding a cotton-tipped swab to its ear.
The protagonist of Algernon Blackwood's "The Man Who Found Out" learned something so repellent from an ancient tablet that he literally had his brain bleached, demanding that a hypnotist eliminate the abhorrent knowledge via Laser-Guided Amnesia.
The Dresden Files the description of shagnasty. Unfortunately for Harry he'll never forget what it looked like.
In one of Manly Wade Wellman's Silver John stories, "The Desrick on Yandro", there's a creature called a Behinder. Nobody knows what it looks like, for it always attacks its victims from behind. John happens to be looking at Yandro when one makes its move:
"The Behinder flung itself on his shoulders. Then I knew why nobody's supposed to see one. I wish I hadn't. To this day I can see it, as plain as a fence at noon, and forever will I be able to see it. But talking about it's another matter. Thank you, I won't try."
The page header used to be a quote, from Frasier's reaction to his brother mentioning he's only packing sunscreen for his honeymoon.
Frasier makes many statements like this in the series. Another example:
Roz: Gosh, mine was this lifeguard. He had long blond hair and the bluest eyes. He used to get so sunburned, I'd spend hours just peeling the skin off his back. What was his name? Rick? Nick! I know there was an "ick" sound. Frasier:I was about to make one of those myself.
Roz: Big news. Gertie Oldson is leaving the station. Daphne: What, from "Gertie's Grab Bag"? I love that show. Frasier: Oh please, that homily-spouting Hausfrau? It's the most embarrassing thing on the air. So, she finally got canned, eh? Roz: No, she got a million-dollar TV deal. Frasier: (chokes on his sherry, then mock-calmly mutters) Well, good news for Gertie and for the many atheists who will welcome this new proof of their theory!
"The Wizard and Roz":
Frasier: (after seeing his mentor Dr. Tewksbury wearing only Roz's robe) I've gone blind. And ten seconds too late.
In "Lilith Needs A Favor", Niles demands the Cafe Nervosa waiter use Brain Bleach to forget about what Niles thinks is a picture of Daphne's nipple.
Waiter: Hey, where'd you get the nipple shot? Frasier: Good lord! Niles: (frantic) You are to erase that from your mind! Frasier: Is it Daphne? Waiter: (smiling broadly) Nice. Niles: (to waiter) You're not erasing! ERASE!
Later, Niles finds out that it's a pic of Martin's nipple. Niles' horror is hysterical as he tries to forget ever seeing the pic. Martin's poor choice of words doesn't help.
Martin: Oh, I can't wait to get to Bogart's. I know just what I'm going to get: the barbecue chicken breast. (Niles reacts in horror) They have the juiciest one in town. Or, or the lamb. They serve an enormous rack. (Niles cringes again) Niles: (flustered) Great. Martin: You might want to get an overcoat of Frasier's out of there. It's supposed to be pretty nippy tonight. (Niles cringes yet again)
The episode "Momma Mia" when Frasier finally realises that his girlfriend is identical to his late mother, and Martin thinks that he has further followed suit of Oedipus.
Niles: (running for his bug spray) Frasier, you didn't do anything wrong, your feelings for Mia stem from perfectly natural Oedipal desires.
Frasier: Yes, but Oedipal desires are supposed to resolve themselves by the age of six!
(Niles starts with the bug spray)
Frasier: Oh for God's sake, give me that, you idiot!
(Frasier takes the spray and "blinds" himself with it accidentally)
Frasier: (screams) I've blinded myself!
(Martin enters with water and sees the commotion)
Martin: I leave you alone with him for two seconds!
Sam: Check out this new video I found called Neck Infection. Carly: Okay. Freddie: Whatever. Freddie & Carly: AAAAAAAAAH! Carly: EWW EWW EWW EWW!!! (runs away screaming) Sam: Wait, Freddie, I want to show you this next part. It's really funny. Freddie: (screams) MOMMY! (runs away)
The Central Perk manager hates Phoebe's singing so much it makes him want to "push my finger through my eye, into my brain, and swirl it around."
In "The One with the Butt", Joey gets a gig as a butt double; he goes into Monica's bathroom to put lotion on his rear end in preparation for the "part". Chandler comes in with the phone in his hand:
Chandler: Where's Joey? His mom's on the phone. Monica: In the bathroom. I don't think you wanna go in there right now! Chandler: Oh come on, we're roommates. (enters bathroom, runs out screaming) GAAAAAAH! MY EYES! MY EYES!
In "The One Where Everyone Finds Out", Phoebe sees Chandler and Monica having sex, and screams the exact same dialogue.
The Class: Kat shows them pictures taken of body parts from a cadaver.
Ethan: Dear God, what is this?! Kat: It's a tongue! Ethan: It's not in a mouth!
In Supernatural, Sam catches Dean having a threesome in a motel room. Back in the Impala, he asks Dean for his knife. "...So I can gouge out my eyes!"
A rather chilling instance of this in season 3, episode 2 ("The Accused Is Entitled"), when the killer is so disgusted by the fact that the "woman" he slept with was a man, he killed him in a violent rage.
There is another episode, "Two and a Half Deaths", wherein a man accidentally sees a man and a woman get down to business in front of him (he was hiding in a closet with wooden-slat doors).
"Some things, once you see 'em, you can't unsee."
NCIS has an episode, "Dead and Unburied", where Tony asked to see the body of a deceased Casanova to determine whether the man had had a large penis. Ducky obliged. Unfortunately for Tony, that particular body part was in an advanced state of decomposition.
Tony: Is there a way you can psychologically unsee something?
There aren't enough handywipes in the world to clean Monk's brain after reading the innuendo-filled memoirs of an actress from the only TV show he ever watched as a kid. A certain page is so disgusting his assistant rips it out before he can read it and at the end Monk returns the book, the page replaced with a page from Charles Dickens.
Al is rendered temporarily blind after going into the bathroom while Peg's mother is taking a bath. One of Peg's cousins tells him this actually happens all the time; it happened to her doctor once. Fat jokes about Peg's mother are a Running Gag on the show.
Another episode sees Al after a seeing a fat woman's underwear at the shoe store.
Al: First thing they teach you when you're a rookie salesman is never look up. I looked up, Peg. I saw underwear. It said Saturday. Peg: So what? Al: TODAY'S WEDNESDAY!
In Hannah Montana, after finding out that the reason Oliver calls Lily "Lilypop" is because he liked her even when she had a pimple, Miley replies, "I could have lived my whole life without knowing that."
Hagrid: (to Hermione) Hello, who are you? Hermione: Hagrid, it's Hermione. Hagrid: (eyes widen) Yikes. What happened? Take it out of my brain, take it out! Doot-doot-doot-doot-doot! Okay, well, all right, I'd better go out to the woods and tame my dragon. Harry: Ah, you got a new pet? Hagrid: (pause) Nope.
Web Soup offers a "Palate Cleanser" clip (usually cute animals acting cute) to serve as much-needed Brain Bleach following the disturbing "Things You Can't Unsee" segment.
Greg has just performed a song about vacuum cleaners as a German cabaret girl Drew: $1,000 to whoever can find me a brain scrubber, so that I can get the image of that tongue-wagging out of my head so I can sleep tonight...
The Office: Michael, after having walked in on the hospital room where Pam is giving birth.
Michael: Gotta go wash my eyes...
True Blood: Tara, faced with watching a doctor aspirate Jason to treat acute priapism (i.e. stick a big needle into his swollen pee-pee), informs the world at large that "I ain't never gonna be the same after this."
Tensou Sentai Goseiger has the Mind Wash card, exclusive to the Blue Ranger, which functions in the same context as neuralysers in MIB (both are uniformed groups who must keep large-scale activities secret from the public). One difference though — a small boy named Nozomu is immune to it, which kicks off the series proper.
The Doctor Who episode "The Beast Below" had the characters receiving horrified messages from themselves, recorded just before they applied Brain Bleach to themselves. The ship they were on could only keep its inhabitants alive by torturing the last surviving Star Whale, and anyone who got in trouble in sight of the Monster Clowns, not including children, was fed to the whale to keep on a perpetual motion device of suffering.
On The Daily Show, during a January 2011 segment on how all the zodiac signs have changed, Jason Jones reveals a rather... um... revealing tattoo. Jon Stewart replied that he'd probably have to get the image burned from his brain by laser.
In an episode of Being Human, upon visiting a vampire party, full of humans willingly offering themselves as food sources to rather underdressed vampires, George turns to Nina and requests that when they get home, she remind him to "gouge out his brain, with a spoon".
Everybody Loves Raymond: Upon hearing about his father swimming nude at the lodge, Ray says, "I'm gonna gouge out my eyes." Which in turn prompts Robert to reply, "But you can't gouge out your mind's eye."
Quoth Sean of Hustle, after seeing Eddie pretending to be a stripper: "I'm gonna wash my eyes out, with mouthwash."
Community: Annie wishes she had some after questioning a lawyer about which room his office is in.
Annie: First, he said it was 69. I wanna rub Purell on my brain.
Dollhouse recruited its doll volunteers from people who were desperate to forget something.
Buffy the Vampire Slayer: Willow's offhand statements start coming true, so Giles is struck blind, and Spike and Buffy start making wedding plans. Xander sees the two all lovey-dovey and asks "Can I be blind too?"
Dr. Cox: Just the organs, Bob, don't need the visual of old men with erections. Carla: And now it's in my head forever.
That '70s Show: Eric Forman walks onto his parents having sex, and spends the rest of the episode acting like a zombie.
The L Word: Final Season. All the brain bleach on earth...
Star Trek: Deep Space Nine: "Looking for par'Mach in All the Wrong Places" When Klingons get loved up, injuries tend to happen. Doctor Bashir has a very, very bad day at the infirmary when he discovers this interesting little facet about Klingon love-making.
Bashir: Compound fracture of the left radius, two fractured ribs, torn ligaments, strained tendons, numerous bruises, contusions and scratches... what have you been doing? Quark: (exchanges lecherous grin with Grilka) You mean, what have we been doing? Bashir: Never mind. I don't need that particular image running around in my head. I'll... just treat you. (as a badly-injured Worf and Dax arrive) Bashir: What happened to you two? (sees their sheepish expressions) No, no! I don't need that image either! In fact, I'm going to stop asking that question all together! People can come in. I'll treat them. And that's all!
In the Haven episode "The Hand You're Dealt", Audrey and Duke try to interview an elderly and obese man, but then the apparently senile man starts stripping in front of them. Audrey and Duke are absolutely disgusted and beat a hasty retreat.
In the fourth series third episode of Misfits, Finn rejects the possibility that his stepmother was flirting with him because she has had sex with his father. Jess asks him if he would reject Jess if Jess had sex with Finn's father. Finn then finds himself picturing Jess having sex with his father and complains to her about it. She asks him if they were in a specific position, which makes him picture that as well.
There's also Mike and the Bots' cries of horror whenever the camera pans down during Prince Of Space, revealing that the Chicken-Men of Krankor are going commando.
Mike: (disgusted) What gets into some civilizations?!
And during the sex scene between Linda Evans (yay!) and Joe Don Baker (oh sweet merciful Bahamut) in Mitchell. The sequence begins with a bizarre shot of a bulge slowly sliding down the inside of Joe Don Baker's trouser leg. It turns out to be his snubnosed Colt revolver, but for a second... Even worse, the implication in context is that it was dislodged by Joe Don Baker's...no.
Joel: BABY OIL?! AAAAAAAAAAAHHHHH!!! Hoyt Axton: (singing the background music) My, my, my, my, Mitchell... Crow: My, my, my, my GOD no!!
Crow: Now, wait a minute — how did she turn into a bat? The only contact she had with him was in the hotel, and... (long, awkward pause) ...Oh my God. Tom: Gahh! Crow:Oh my God! I get the shower first! Tom: No, me first! Mike: Urgh.
Parts: The Clonus Horror. Old!Richard's son getting out of the pool and walking his wet, speedoed batch right in front of the waist-high camera didn't do Mike and the Bots any favors.
Mike: No... no, don-OH! We found it — this is the horror! Servo: Gah, stop it! What've we ever done to you?
Not all the examples come from the experiments.
One host segment of Bride of the Monster features Tom Servo dressed in a nurse's outfit while Joel used an invention to see what Crow was dreaming of: a sexual fantasy with Tom dressed in the same nurse's outfit. Tom's reaction was identical to VanDorn's in Hardcore.
Servo: Turn it off! Turn it off! Turn it off!!!
Immediately after, Crow promptly wakes at Servo's panicked reaction and does a double-take at Servo before realizing what he just glanced at... and the both of them scream in horror.
A similar occurrence happened when Mike decided to contact the Mads without permission, resulting in them stumbling into a disturbingly domestic, loving scene that left Mike, Crow, and Servo with their mouths widely agape.
Mike: So we can contact the Mads when we like... You know what? I don't think I'm going to do that again.
For example, in the RiffTrax of Attack of the Clones, Kevin tells Mike during the Greasy Spoon scene regarding slovenly cook Dexter, "Mike, I invite you to think about his underpants." Mike understandably reacts in horror: "Why, Kevin?!" Kevin subverts the trope by telling him that so long as he's thinking about Dexter's underpants, he's forgetting the rest of the movie. Mike's response. "(sigh of relief) You're right. Ah, his underpants..."
Special Mention goes to Child Bride. When watching this movie, the producers decided that they would never use it in their show. There's a hilarious moment in one interview.
Kevin: I remember now that hillbilly... teenage... Mike: Oh, no! Kevin: I don't want to tell the name, because some of you freaks out there will try to find that film. And that's just wrong! I don't remember how we got it, but we got it out of the place as fast as possible. It was about child brides, and it was... Mike: That should give you a clue about the title. Kevin: Stop! Psshh! Psshh! Kevin: And it was all said in crackabill, like they actually hired people who lived there rather than actors. And I had a good cry after that one. And then a shower. Mike: You should take a shower right after that.
And then came the convention appearances. One notable exchange involving Dr Forrester's Skunk Stripe:
In the Greek tragedy King Oedipus, when Oedipus learned that he had murdered the King on the road before marrying the Queen, oh, and also that they're his mom and dad, which means his kids are the product of incest, he literally gouged out his own eyes in horror on finding her dead by her own hand (using the pin used to secure his cloak, no less), and then went Walking the Earth to atone for what he had done, making this Older Than Feudalism.
There's also nepenthe, which really is Brain Bleach.
This is the express purpose of the waters of the river Lethe — to utterly remove one's memories of his or her past life.
At the siege of Thebes, Athena is just about to bring Tydeus immortality, when she finds him chewing on the brains of the guy he just killed. Before she can go back home, she has to scrub her brain out with a ceremonial fire of purification and water from a special river. Needless to say, no immortality for you, Tydeus.
Early in Culture Shock, Jimmy Two-Teeth the rat steals the duo's phone. When they catch him and make him return it, he vomits it up. Sam's reaction is a stunned "Oh, for the love 'a — I wish I could unsee that!"
Happens again in Beyond The Alley Of The Dolls. Flint Paper leaves to go "kill a few neurons" after seeing Girl Stinky kiss Sam.
In Ice Station Santa, Sam and Max both want their eyes clawed out after seeing Bosco's latest disguise. He's not wearing one.
Tales Of Monkey Island, Episode 1: Guybrush Threepwood goes to open a cabinet, which the Voodoo Lady yells for him not to open. He asks her what's in it, and she replies, "My unmentionables." Guybrush shudders, and the cabinet from then on is named "The Scariest Cabinet In the World."
Planescape: Torment accentuates not only the use of Brain Bleach but also the importance of keeping a note of doing so. A story is told in-game about a man who at one moment came to consciousness with no memory of himself. He then encounters a woman, who tells him that he has "one more wish". She then explains that she granted him three wishes earlier and that he already made two of them. The man wishes to know who he is. The witch cackles and remarks that "That was your first wish".
Kott: "The sky boils, the sea burns, the soil begs forgiveness." You ever heard anything like that? Qualstio: No, but, it's pretty creepy. I wish I could un-hear it.
On one episode of Help Me! Professor Kokonoe!, Makoto runs right on in with a tone in her voice and a facial expression that suggests she needs the biggest glass of the stuff the titular professor can offer. Considering that the bad ending required to get here is Demon Path lite, can you really blame her?
In the Sword of the Stars universe, there is a subcaste of Prester Zuul known as the Sin-Eaters who specialize in providing this service, by taking such memories into their mind away from those who suffer from it. They see holding these memories as part of their penance.
The diary entry on the first appearance of Panoptes in Azada 4: Elementa referred to it as "an image I can't remove from my brain with bleach and a scrub brush."
Phoenix Wright: Ace Attorney: Trials and Tribulations has Jean Armstrong rubbing lotion on himself. It elicits a call for brain bleach by Phoenix.
Prior to that:
Phoenix: So the particular feature you recognize about the waitress is... her outfit!? But anyone could wear just such a uniform! Even me! Judge: Mr. Wright! Please spare the court of any further mental anguish from that image.
(ten seconds [or so] of screaming) Oxhorn: It's horrible! Staghorn: Oh God, why? Oxhorn: I can't see! I'm blind! Staghorn: Never will I be able to love another woman again! Oxhorn:Beat the images out of my eyes! Staghorn: We gotta run! RUN! Oxhorn:RETREAT TO THUNDER BLUFF! ::They retreat to Thunder Bluff, shouting various things like "Run like your mama!"
Homestar Runner and Strong Bad are bemoaning the fact that The Cheat and Marzipan are going on a date.
Homestar Runner: Mainly, I just want to keep 'em from making out. Strong Bad: Ewww! The disgust! It won't wash off!
In Sonic Shorts, quite a few of the shorts involving Eggman involves this. The worst of them all is arguably his "ultimate weapon."
This is one among the many FreakAngels powers. They apply it as a mercy to traumatized people they encounter, but also often without consent, in order to keep their powers secret. They do have self-imposed laws concerning the morals of this practice, but treat those more like "Guidelines"
Jevee Ceeta:: My stomach is in my throat now. It's trying to spit acid on the parts of my brain that remember reading his message.
The incident with cloning of General Hugo Matsui Xinchub in an effort to be paid five times for one job. Clones are grown in slime-filled People Jars and do not have clothing. While this may be enough to elicit minor comments of disgust when main characters are being partially cloned as an extreme medical measure — Xinchub is morbidly obese, to boot, and then, there was that tattoo...
Kevyn: If I get drunk right now I might be able to shut down my long-term memory before the next write transaction.
That page also mentions a more literal version in "minute after" pills (mercenary work obviously can involve quite unpleasant imagery), but as the next page shows, these don't always work well enough.
Der Trihs, staring into his (iced) drink after learning adult kreelies had been mating in the freezer (via external fertilization):
Der Trihs: I need a tall glass of bleach right now.
Roy and Belkar thinking that Haley was talking about Elan's penis when she's really talking about the new rapier she found for him.
Haley: Vaarsuvius checked it out too, naturally [...] I mean, it's awfully skinny, but he uses it so masterfully.
This is then subverted when Haley says:
Haley: Well anyway, V says Elan has been running around naked, so I'm off to see what his 18 Charisma is worth "under the hood".
Roy needed some Brain Bleach after he died and saw his mother in the afterlife, and realized that her spirit manifests there as a hot chick several years younger than he. He needed more Brain Bleach when he saw that she was sleeping around.
The Oracle of the Sunken Valley needed Brain Bleach after (apparently) having witnessed, in a vision, Roy and Celia having sex. He's a kobold, so he finds mammals mating disgusting.
#753 has Belkar attacking Roy mentally once again. He's definitely getting a lot out of that feat level in Craft Disturbing Mental Image.
Robots commit data from short term memory to long term memory about every 24 hours in a procedure similar to sleep. Thus "staying awake" for extra 24 hours after a particularly nasty day will overwrite that day's memories and experiences, serving as general-purpose Brain Bleach.
Organic AIs were created with several safeguards, control and shutdown mechanisms hard-coded into their DNA. One of those works with a chemical that disables short to long term memory data transfer; another allows to wipe recent direct orders from the AI's memory.
Bowman AI architecture works via neural pathways. Pruning those pathways indiscriminately wipes information associated with them, be it memory, skill or attitude. The "Gardener in the Dark" neural pruning software, which blindly cuts all pathways above certain length, reduces self-aware AIs to sub-sentient robots, leaving only their primary purposes intact.
When the Light Warriors learn of Bahamut and Matoya's relationship. And that the quest item they had just fetched for Bahamut was actually the last ingredient for a virility drug.
Black Mage: I'm going to throw up now. On the off chance that there's a kind and loving God, I will choke on my own vomit. Do not help. (after vomiting for several panels) Oh God, I'm ejecting things I haven't eaten yet. (a few pages later) Black Mage: Right now, I'd be happy with the power to stab out my mind's eye. Red Mage: Can we get a full round of that?
In a later scene, Thief is unimpressed with a so-called dark, mysterious woods the party has entered, and makes an aside remark about having seen "darker wood in Elf porn." It's enough to make Black Mage projectile-vomit in the background. His analogy certainly didn't help matters... or the readers' sanity...
Black Mage: Man, and I didn't lose it when I caught sight of an elder god defecating. Fighter: (looking down) You got some of it on my shoes. Black Mage: It shat out advertising executives. They're the bowel obstruction that killed the old universe.
When Red Mage proposes animal husbandry as a solution:
Red Mage: Yeah. Two words for you. Animal. Husbandry. Fighter: I don't know what he means. Thief:God, I envy you.
Characters in Umlaut House do it from time to time. Given that most of them have quite a few implants in their brains, this is apparently a pretty trivial thing for them to do.
In Nip And Tuck, after being shown a picture of previous Pop's Girls, Nip asks about the fox cutie, stating that she was hot. Pop responds that that is Nip's mom. He then asks his brother to take a toilet brush and run it through his brain a few times.
Riff: Whisky double straight up. Bun-Bun: Alfalfa margarita, hold the alfalfa. (gulp!) Riff: It's that he came back from the doctor's with that announcement that freaks— Bun-Bun:Never speak of it again.
In "Safehouse", Riff is looking a way to undo the effects of a hypnotic pattern spread via the Internet, and in the process runs across some zombie pornography on its creator's computer. When he does manage to send out hypnotic patterns to undo the previous ones, he also includes the command "unsee the zombie porn".
In the female dominant webcomic Girly, the most important male character, Officer Policeguy, has a clear sign of brain bleach. He begins the comic with long hair and bishounen looks. During the beginning of the comic, he almost has sex with El Chupacabre, a man with the ability to attract any woman or man that looks somewhat like a woman, even if they are straight. He is traumatized, cuts his hair shorter, and blocks out the event completely from his mind when questioned about it later. However, when El Chupacabre accidentally falls on him later on, the horrible memory comes rushing back and starts cursing dramatically at him.
Used in a rhyming non-canon Wonderful Life-ish storyline (the angel was drunk, so she took him to the wrong "what if" universe) when Alex realizes that the chick he's been checking out is his own opposite-gendered parallel universe equivalent.
Alexis: (to her friends) I left them there on the street as black stains. Alex:' (to the drunk angel) I'd like to go home to buy bleach for my brain.
In canon, Alex's captor screams for this after getting an extreme close-up, via flashback visual, of King Hippo's "bitch tits."
And then, of course, the crowning example found here, combined with a liberal dose of self-inflicted Explain Explain Oh Crap as Alex draws some conclusions about King Hippo's relationship with his ex-wife.
Who Says Space Quest is Dead: Xandra mentions she's seen a Crack PairingSlash Fic between Vohaul (of Space Quest) and Manannan (of Kings Quest). Roger goes off to get himself killed so that he can remove the image from his head. (Scary thing is, this is based on a real slashfic with that pairing that actually exists. It's just as mind-scarring as it sounds.)
Citizen: Thank the Lord I brought my lucky pliers today! Nothing for it but to pull out my own eyeballs and stamp on them... Only way to be sure I never see that again. Citizen #2: Hey, after you with those pliers?
Susan: You once told me you felt less attracted to Elliot after he started having to transform. What if the actual reason you felt that way was that it made him feel more like a sister to you? Sarah: [Beat Panel] Nope. Not considering it. Susan: It could explain a few- Sarah: Nope.
AH.com: The Series' equivalent is characters crying out for "THE FORKS<" which, it is implied, are jabbed into the eye and then into the brain in an attempt to cut out the memories.
Chakona Space features Stew discussing having a group of gay characters sire her future children. Her captain, knowing they're not interested in females mentions them chasing after her with a turkey baster.
Stew: Thanks. Now I can't get that image out of my head.
This live online puppet show, that runs for 4 hours every Sunday night (6pm-10pm Eastern), has the Pink Flamingo Challenge... where visiting guests' reactions are filmed as they watch the last 5 minutes of the movie "Pink Flamingos." Do NOT ask what they see... but they get bonus points if they can eat anything chocolate while watching without gagging.
Anything Fred Bedderhead sends in.
Protectors of the Plot Continuum features Bleeprin, a mixture of bleach and aspirin, and Bleepka, which is Bleeprin in vodka, which are taken to purge the memory of bad fanfic. The agents go through a lot of them.
The original Hamster Dance did this to many people — it was even turned into a commercial to show how truly disturbing and annoying the site really was.
Jericho's clothing in the Whateley Universe. Jericho is a (sort of) blind deviser who deliberately wears clothing so horrible that people — mutant superpowered people — flee in terror. He hangs with a guy who looks like a humanoid velociraptor, a girl who looks like a naga, monster-girl twins who cast a fear aura, and it's his clothing choices that upset nearby people.
LoadingReadyRun had a sketch called "Forget About It" which was about Graham getting his brain bleached. It can be seen here
Demyx Time: After Axel discovers that Larxene slept with Xigbar (along with most of the rest of the Organization):
Axel: Xigbar? Larxene: (nods) Uh-huh. Axel: Tell you what, I'll be back in about a half an hour, there's some stuff I really, quite desperately need to bleach, so if you would please—- (leaves the room followed by screams of pain)
Personnel working with SCP-231-7 are mandated to have regular memory wipes of the truly horrendous things they have to do, to ensure the End of the World as We Know It, Fetus Terrible she carries doesn't get out. Before it became policy, suicide among the personnel was very high.
Personnel will regularly request amnesiacs after particularly unsettling events, such as witnessing the particularly brutal death of a colleague or watching End of Evangelion. Most requests are denied.
The Media Hunter and several other reviewers need this after watching the scene listed above from his Ace Ventura review.
Homer is hired by Mr. Burns to help him write an important speech. At the time he was hired, Homer had been using medical marijuana and found everything funny. Since he was clean now, and no longer found Burns funny, Marge suggests Homer picture Mr. Burns naked, resulting in him screaming. Trying to make the situation better, she then changes it to picturing him in a funny hat. This idea is worse, causing Homer to curl up in a ball shuddering.
Flanders: Feels like I'm wearing nothing at all! Homer: MUST WASH EYES!
The Simpsons universe has its own Brain Bleach: Moe developed a drink out of various boozes and the poison of a certain butterfly that wipes the last 24 hours out of it's drinker's memory. Homer drank it once because he found out that his family had planned him a surprise birthday party, and didn't want to ruin all their work.
Also in the episode "Tales From the Public Domain" in The Simpsons, Discus Stu reveals he's not a suitor for Marge, but for Bart. Bart shudders in disgust.
Later in the same episode, Odysseus's crew see the sirens (Patty and Selma); one yells Someone, gouge out my eyes!
Aunt Patty remarks "There goes the last lingering thread of my heterosexuality!" after seeing Homer run naked through the kitchen in the "Treehouse of Horror" segment "Clown Without Pity."
The police charge into Comic Book Guy's place and see him and Mrs. Skinner having sex — Eddie promptly vomits at the sight, and Lou reassures him "It's okay, you wouldn't be human if you didn't react like that."
Wiggum: Uh, Comic Book Guy, you're under arrest for the possession of illegal videos. But we'll reduce your sentence if you put your pants on — fast!
Hysterically inverted when Bart Simpsons sees what really goes on at MAD.
Bart: (dreamily) I'll never wash these eyes again.
One episode opens at a talent show put on by the school teachers. Mrs. Krabappel's act is performing a striptease with a balloon-covered costume while singing "Fever" and popping the balloons one by one. The audience is visibly disgusted, and Bart mutters "Kill me..." After everyone's left, Homer has an armful of concessions; Marge asks if he paid for them and he responds "I saw Krabappel's butt; I paid."
One instance in American Dad involves his boss, his (college age) daughter, and kills his appetite.
Stan: Oh, come on! [Bullock] rode me like an animal for three hours! Do you have any idea what that's like?! (Hayley folds her arms and cocks an eyebrow at her father) Stan: (discards restaurant menu) And now I'm not hungry.
In the Danny Phantom episode "Secret Weapons", Jazz hacks into Vlad's laptop to discover what his evil plan is, only for images of her mother, who Vlad still lusts for, to show up.
Jazz: Oh, gross! I will never be able to unsee this!
Requested on Duck Dodgers by I.Q. Hi twice in "Lame Duck Mind". He first asks Manobrain if he can erase their memory of the contents of Dodger's mind. Manobrain assures him that he can wipe their memories the second they leave Dodger's brain. The second occurs when they achieve their objective of rescuing the President of Space, only to find that he'd passed the time trapped in his closet dressing in his wife's clothing. In that instance, it is no sooner asked then granted.
This is as close to a MIB neuralizer that we have. After about two or three minutes for it to kick in, you will not be able to form any new memories for as long as the drug is in your system. It is in the same class of drugs as the infamous Rohypnol, or "roofies" except that it is much more powerful. Having been given it for a very painful joint realignment, the experience can be described basically like a "missing reel" to a film. One minute you're watching the nurse push the medication, the next you are groggily staring at your feet in the recovery room with your joints in proper position, and the clock reads about an hour later. As you can imagine, the evil uses for such a drug are considerable, and it is kept under very tight security and stringent regulations.
Booze. May require constant application. Not quite, though, as Drunken Recall theory claims that you do remember it, the memory was just stored in a different spot than normal.