brain deficit 

relating to having a brain deficiency. a brain deficit will usually be either very silly, stupid, idiotic or all of the above. shave a square into your son's head to prevent him from getting the brain deficiency. you can also wrap your newborn child's head in a cloth to make their head nice and round, bengali style. this prevents brain shrinkage. unfortunately, there will be some cases in which preventing a brain deficiency will be impossible, as some are just born without brains. these are known as brain deficits. there are no known cures to having a brain deficiency. maybe give your sorrows to the sadh guru or sumin idk

someone: haha Kai, you silly, stupid, idiotic and all of the above, you're such a brain deficit. you're not even a smooth brain because you suffer from an incurable brain deficiency.

Kai: Should I call my mum ??

brain deficit by asalin315 March 12, 2021

Brain Cell Deficiency Syndrome 

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.

Conspiracy theorist: the earth is flat!
Me: the earth is round, dude, you’re suffering from a case of Brain Cell Deficiency Syndrome.

Brain Cell Deficiency Syndrome by GeosWorld April 23, 2023

jerb 

well known from south park
rednecks get angrry that future folk took there jobs so they yell
They took ouare jerbs!

Them future folk took ouare jerbs!

jerb by Jimberley Kim April 7, 2005

Cheeks 

An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)

"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."

Cheeks by thecartisan April 26, 2020

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility

I'm putting this CV straight in the bin. Written totally sans sheriff.

sans sheriff by Jamarley July 3, 2019

Breadhead 

Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".

A breadhead is like a crackhead, but for money instead of crack.

Breadhead by 🅱️ U S 3 4 8 March 30, 2022

Stink lines

As seen in illustrations or cartoons: Wavy, vertical lines rising above a person, place or thing. Denotes a foul odor.

"You didn't put enough stink lines on your picture of the teacher."

Stink lines by Athene Airheart March 14, 2004