Brain Bleach/Anime and Manga


 * 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.
 * For those who don't know, Kokoro looks like this.
 * Lampshaded by Chopper, who notices that peoples memories about Kokoro disappear when they meet Camie.
 * Bleach: Yumichika reacts to Charlotte Cuulhorne as if Cuulhorne's appearance is this. When trying to close his eyes to block out the horror fails, he decides the only solution is to wipe Charlotte out of existence.
 * Azusa of K-On reacts this way to a video of an unfortunate incident at the band's previous performance; in the English dub, she actually says "I can't unsee it!"
 * In Fairy Tail, 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 and disgust. "My eyes!"
 * 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 thing 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.
 * In A Certain Magical Index, during the Freaky Friday Flip incident, this is Touma's reaction to his mother in Index's body and Index in Aogami Pierce's body.