molecule brain 

When you've made a mistake that's so easy to not make it, but you still do it, like misspelling brain to brian.

Also is used by peers / friends through gaming sessions when you've doone something stupid.

You have such a molecule brain!
Fuck, I feel like i got a molecule brain.

molecule brain by SmallChames November 25, 2020

Small Brain 

When taken almost literally, it means someone is unintelligent or unequipped to talk to a specific person or about a subject. Although it has ironic connotations to mean that the interlocutor or the person they are speaking with is on another level/wavelength.

Compared to my friend, big brain Bojack, who is simultaneously discussing Kant's Deontology and Quantum Mechanical superposition, I have a small brain.

Small Brain by Jorolb November 30, 2020

Big Brain 

when you send a pic using a filter to Alex English while driving then get honked at because the light turned green and you didn't know that

Wow John is very Big Brain. What a guy

Big Brain by jbr0wn May 26, 2021

P brain

Someone who has smoked a viscous amount of methanphetamine creating a slurry of a brain/ someone with severe down syndrome

Toby the retard says what a lovely day
Reply- shut up P brain

P brain by Jamoneywoney June 3, 2021

Goon Brain 

A condition in which the brain is underperforming due to drinking 2+ days consecutively.

Cases of Goon Brain are most commonly seen after boys trips or after any other elongated drinking binges have occurred. Many times, Goon Brain victims begin suffering from the condition before a trip has even ended.

People suffering from Goon Brain may take up to 7 days to return to 100%, especially at work.

We’ve been home from the booze cruise since Monday and after 48 hours, Dan still hadn’t noticed he’s wearing two left shoes; I’m worried he have Goon Brain.

Goon Brain by ShitBrainChampion2001 April 5, 2022

Baby Brain 

What a self-entitled and failed actress with aspirations to be this century’s Princess Grace calls the future queen of England et al, who has forgotten more about clothes and style than ever was written in fashion magazines, when said fashionista pointed out flaws in her daughter’s flower-girl dress which the ham disagreed with. As reported by the mummer’s husband, whose DNA results are a State secret, in his expose that nobody but journalists will read and in doing so spat the dummy thereby proving he is the one who has one.

"You're wrong! Your hormones stop you thinking. You have BABY BRAINS...And I'm more beautiful."

Baby Brain by M-A G January 5, 2023

gettin sum brain

Recieving oral sex

I was in the backroom gettin sum brain

gettin sum brain by Karmen_1988_08 December 8, 2013