Known Idiot 

A person who is known for being wrong about everything that is worth having an opinion about.

If you have a plan you want to follow you should ask their opinion about the plan. If they hate it, then you should probably go ahead and implement the plan. If they love it, then you need to go back to the drawing board as your plan will have deficiencies that you haven't been able to see, but the Known Idiot will have detected and loved.

Programmer 1: John is our known idiot, can you ask him what he thinks of your software design before implementing it?
Programmer 2: I asked him already - he thought it was a great idea....so I'll throw that design away and start again, it's obviously full of bugs.

Known Idiot by Danack September 8, 2013

Known Idiot 

A person who carries out idiotic action even when they should know better.

For example, Donald Trump wiping his lips then shaking hands during a corona virus press conference.

Donald Trump is a known idiot when it comes to the corona virus.

Known Idiot by Danack March 14, 2020

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