When someone who listens to Phish has become so brain dead that all they can think about are the Phish lyrics that knocked 80 points off their IQ. These people also do not know how to dress and rarely shower or groom themselves.
I can tell by the dumb look and blank stare at that that dude has Phish brain. There’s nothing going on up there.
by HappyCamper919 June 20, 2024

by Everyone Us September 4, 2018

A term one uses when they can't remember anything and are just overall feeling awfully stupid today. When you are trying to solve a math problem, but you completely forget what to do.
Girl #1: Uggh this math homework is giving me a headache.
Girl #2: It's not that hard, we just learned this all in class today.
Girl #1: Yeah, but right now I'm having the biggest brain fart.
Girl #2: It's not that hard, we just learned this all in class today.
Girl #1: Yeah, but right now I'm having the biggest brain fart.
by the_true_name_definer ;) December 19, 2018

NPC's with zero personality and originality so anytime they are confronted with a creative choice. ei; What color should I do my hair? How should I decorate my room? What tattoo should I get? They immediately hop on Pinterest or google images in a desperate attempt searching for something to copy that they can hopefully pull off as a "unique" part of their quirky style or whatever.
I saw some boomers in the tattoo studio just looking for pics online they could have the dude copy for them, fucking pinterest brain man.
by Fawzx August 30, 2019

When someone acts so stupid, it’s like they have a lack of brain cells in their heads.
People with BCDS typically post nonsense on Twitter and Reddit, and think the moon landing was faked.
People with BCDS typically post nonsense on Twitter and Reddit, and think the moon landing was faked.
Conspiracy theorist: the earth is flat!
Me: the earth is round, dude, you’re suffering from a case of Brain Cell Deficiency Syndrome.
Me: the earth is round, dude, you’re suffering from a case of Brain Cell Deficiency Syndrome.
by GeosWorld April 23, 2023

Emem: Yoo that nigga Matthew lit the J yesterday with the filter still in his mouth.
Felix: Bruh mans def got that Gorilla Brain.
Philos: Broo you never tried smoking like that though?!
Felix: Bruh mans def got that Gorilla Brain.
Philos: Broo you never tried smoking like that though?!
by northerntitties February 20, 2022

It’s a word for saying that you are smart and aware what’s going on in the world opposite of brain dead
by John46778 May 22, 2022
