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yester-eve 

Nigel: I say, Basil, I had rather too much to drink yester-eve.
Basil: I suppose that would explain your vomiting this morn.
yester-eve by Sir Sleeps-a-Lot July 21, 2008

yester-night 

something that happend last night (instead of yesterday
you dog, yester-night i banged a girl

Yester-Lesson 

A term your English Teacher made up in order to describe the class you had yesterday.
"please refer to yester-lesson"

"Sir what are we doing today?"
"Continuing work from yester-lesson"
Yester-Lesson by Debra Biblooby August 29, 2019

yester-think

Being mired in thoughts and innovations of the past rather than forward-thinking.
I was so mired in yester-think that I didn't realize that technology was evolving all around me.
yester-think by Aaron78 May 24, 2007

Yester-last-year 

A year and a day ago.
You promised me yester-last-year that you'd be be here within a year. It's too late now.
Yester-last-year by Renfran April 24, 2017

yester semester

Last semester, the previous semester of school
“I have to take psychology this semester”
“I took that yester semester and passed. It’s pretty easy.”
yester semester by elainethebrain September 17, 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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