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Grade 13er 

A student who enters college with the expectation that it will be a continuation of high school -- grade 13, if you will. Unprepared, unwilling, and unmotivated are just a few words they subscribe to. The concept of learning repulses and bores them; classes are so much better when answers are served on a silver platter.
Suzy: Man, I hate my college professor. He expects us to study and apply ourselves to our work!

Mark: Quit being a Grade 13er, Suzy. This is college.
Grade 13er by Miss Moonson May 11, 2010

Post Grade 11 Syndrome 

Post Grade 11 Syndrome (PGES) is a phenomenon that occurs during the high school years, often as a result of excessive partying, drug use, or other activities that have a negative effect on brain function and development. It is usually not noticed right away by the sufferer, but becomes more apparent in hindsight once a substantial amount of brain cells have been killed off. Symptoms of this syndrome include but are not limited to: walking into rooms and forgetting why your there, forgetting facts you found easy to remember in middle or grade school, and hooking up with people and having a hard time remembering their names. In short, Post Grade 11 syndrome is essentially a slow process of generally going down hill that begins during high school, and ends whenever you actually grow up or die.
guy 1: 'Man, I totally just walked into the kitchen, opened the fridge, stared at it for like ten minutes, forget why I was there, and then left the kitchen with a water. I used to have my shit so together my brain just feels like its melting.'

guy 2: 'You're right, you definitely peaked in grade 10, you totally have Post Grade 11 Syndrome.'

grade 12 plus

returning to high school after you've finished grade 12 (successfully or unsuccessfully!)
if a student needs to take more courses in order to get into a particular university then they may stay for grade 12 plus
grade 12 plus by bri m June 8, 2007

grade 11 drunk

When mature university students get extremely intoxicated with the help of coolers and a mickey in matter of 30 minutes
Sam and her girlfriends were grade 11 drunk last night
grade 11 drunk by koolio87 May 3, 2012

Grade 10 Negin

The term to get "whtie girl wasted" on partying occasions, formal occasions, and a regular basis.
Hey man how drunk are you?
I am like grade 10 negin wasted!
Grade 10 Negin by gr10negin July 1, 2012

to fail grade 11 

Jerking off, to masturbate, to discover one's clitoris
I need to fail grade 11 before I head out
I miss failing grade 11 with my barber
to fail grade 11 by Tomfoolery_ December 11, 2021
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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