pulled a mark 

When someone has pulled a mark, they have screwed up by making a small error that is usually obvious in hindsight/review, and the error drastically affects the result in a negative way. Pulling a mark is common when advanced math is involved.

I pulled a mark yesterday on my math quiz when I forgot to add a negative sign at the beginning.

pulled a mark by acephoenixgamer January 25, 2018

pulled a marky 

When someone thinks of themself and no one else

It was dinner time and everyone was hungry, mark strolled into the kitchen and made food for himself he just "pulled a marky"

pulled a marky by Thatguysanchez February 1, 2018

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

schmegegge 

Yiddish slang word meaning bullshit, baloney, hogwash, nonsense, crock of shit or hot air.

I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.

schmegegge by budsbabe February 1, 2008

eye bleach 

Looking or experiencing something nice after witnessing something horrid like a disgusting gif or a disturbing video. Typically used as eye bleach are nice images of whatever makes the disturbed person happy.

"Bleach my eyes! Why is that woman's face ripped off!?"
*Looks up images of puppies and kittens.*
"That's good eye bleach."

eye bleach by Rini2012 November 29, 2016