brain rot meaning (derogatory): definition

brain rot

noun

UK /ˈbɹeɪn ˌɹɒt/ · US /ˈbɹeɪn ˌɹɑt/

Etymology From brain + rot. First attested in Henry David Thoreau’s book Walden (1854). See cite below.

Derogatory The degradation of mental faculties, intelligence, common sense, or moral character.

While England endeavors to cure the potato-rot, will not any endeavor to cure the brain-rot, which prevails so much more widely and fatally?1854 August 9, Henry D[avid] Thoreau, “Conclusion”, in Walden; or, Life in the Woods, Boston, Mass.: Ticknor and Fields, →OCLC, page 348:
And then our parents decided that comics books were to blame for their children's brain rot, tossing most of these halftone gems in the garbage.2016 April, Tom Royer, “Rated M for Millennials”, in Mankato Magazine, published 2017, page 25:

1 more example

I carried with me a vague awareness of the political state of the world. I had actual views on things. I made mid-conversation gags that mostly paid off. And yet, four months into babyland and I have reached brain rot.2020 January, Joanna Ellner, “Diary Of A Mum: Part 6”, in Baby, published 2019, page 61:

Derogatory, Slang Any form of media content that is deemed to hold little artistic value or negatively impact those who consume it.

[…] I remember that I had to stay home and receive a stern lecture on the evils of Tinseltown brainrot.1978, Lionel Menuhin Rolfe, The Menuhins: A Family Odyssey, page 47:
It could be a great album, like Big Star’s Radio City, or it could be one composed entirely of what I deemed to be drab, scum-sucking brainrot, like The Stereophonics’ Performance And Cocktails.2003, Tom Cox, Educating Peter, page 111:

3 more examples

So this winter, I'll chill on the couch watching The Only Way Is Essex or some similar brainrot instead, happy it'll be over in a hour […]2011, John Vannisselroy, "Reality bites: we need less English Premier League", TNT Magazine, 15 August 2011 - 21 August 2011, page 52
We need to hold out hope and wish for the best for Gen Alpha as they are truly capable. But with the polarization of the current times and brainrot they are encountering online, it’s hard.2023, Nunzio Amon, “The Future of Gen Alpha”, in Medium:
Implicit in the idea of brain rot is the fear that those who spend too much time on screens will become less intelligent, such as 'iPad Kids', Gen Z and Gen Alpha children raised in the digital age.2024 February 8, Shivé Prema, “What is 'brain rot'? Do you have it?”, in SBS News:

Lifestyle Slang The state of being obsessed with a particular work of media, particularly to an extent considered to be embarrassing.

Derogatory or self-deprecatory

Jojo^([sic]) brain rot is real because why have I just spent the last 10 minutes thinking who'd be better at parallel parking-2024 July 8, LeiaThompson3, Twitter:
I said they both can't act, I still liked the prequels and the acolyte, but it could just be the star wars brain rot that got me lol2024 July 19, @TFMSW, Twitter: