Smooth Brain Society 

A society that includes only people with smooth, silky brains who consider themselves as "smart", Except for the Head and co-head that are just heads instead of brains.

Example:
"Hey, I'm Sean from the Smooth Brain Society"

Smooth Brain Society by eman laer ruoy esu t'nod November 8, 2022

Smooth Brain Moron

When you reply with something smart to a idiot streamer. Famously used by a British world of tanks player that cannot get good dpg's in overpowered tanks.

"What a smooth brain moron" - Will (Quickybaby) Frampton

Smooth Brain Moron by PotatoCrusher May 21, 2023

mega smooth brain

Donald Trump

Donald Trump is so smooth brain that he's mega smooth brain

mega smooth brain by dr.cocslong February 26, 2021

smooth-brained 

An insult referring to the absence of wrinkles present in the human telencephalon(cerebrum) -- the largest region of the mammalian brain. Literally implying idiocy at a physiological level.

Those smooth-brained idiots voted for G.W. Bush twice!

smooth-brained by drastic_quench May 23, 2008

smooth brained 

Your brain doesn't work right and the gears don't function right. Otherwise said as you are stupid, dumb, an idiot.

Hey Darrell those eggs go in the fridge you smooth brained mother fucker.

smooth brained by Smooth brained mf October 3, 2019

Smooth brained crayon eating ape 

Retail investors who invested in GameStop. They demanded a change from the SEC to ban PFOF(Payment for order flow) which was invented by Bernie Madoff and used by Citadel and company to manipulate markets. drsgme.org

Smooth brained crayon eating apes are making DD's on r/Superstonk.

Smooth brained crayon eating ape by fellowApe June 11, 2022

Smooth brainer 

A slang used to call someone dumb, stupid, of low IQ, etc.

Origin: As the amounts of folds on the cerebrum of a mammal brain determines the intelligence of the being, having no folds would mean that they have on intelligence.

Ignore them, they're just some smooth brainers

Smooth brainer by RAPHlEL March 15, 2023