Mainstream brain 

A person who just gets their opinions from mainstream news sources and YouTube channels with 10k + subs. Unable to form their own opinion. Just listens. Doesnt make inference. Has a Twitter.

Mainstream Brain: I hate Metroid the Other M
Genius: Why
Mainstream Brain: Because Angry Joe said so.

Mainstream brain by Chevyman95 September 27, 2019

Big Brain 

Code word for Big Dick

Anthony: I have a big brain!!
Juan: no. You have a small brain.

Big Brain by The_crazy_jazzy September 29, 2019

Goopy brain 

A term created by Sheryl Kierstead to describe a person who may have stupid ideas or provide inaccurate information consistently.

Why are these goopy brains always so wrong.

The ideas they come up with show how goopy brained they are.

Goopy brain by Sherylr1969 October 17, 2019

Big brain 

Extremely large brain. Usually named Lily.

Basically a person with a very large brain that has hella smart stuff.

Random dude: what’s 42+27?
Lily: 69 🧐
Random dude: damn you hella big brain

Big brain by Edjn October 24, 2019

Big brain 

A big brain is a brain that only big brains can handle.

Only a few people have big brains, therefore they're genius.

Person1: 2+2=7
Person2:BIG BRAIN

Big brain by shoulder pain sufferer October 26, 2019

fetus brain

The most intelligent and attractive person ever. You’d definitely want to date them ;)

“Oh yeah, I wanna sleep with fetus brain”

fetus brain by Erectiondetection;) October 29, 2019

Big brain 

to Do meth and heroin

Ur mom a hoe

Oh hi there big brain

Big brain by Woahviky November 7, 2019