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a head for 

Since the very beginning it was clear that a boy had a head for engineering.
a head for by NadyaP June 14, 2016

a head up 

to fight or wanting to fight
You wanna get a head up? Yea thats was I thought
a head up by cyndy February 21, 2003

A Head Full Of Nickels 

A phrase used to describe an absentminded or moronic person who can't retain anything.
Connor, man. Do you hear yourself? You definitely have a head full of nickels.
A Head Full Of Nickels by cablenewz December 28, 2020

A Head of Esteem 

In facing a challenging goal, the confidence that you are good enough to do it.
She'd give it a shot, but first she needed to work up a head of esteem.
A Head of Esteem by Monkey's Dad October 5, 2022

Cochino(a) Head 

Spanglish; Someone who has their mind in the gutter. Dirty minded. Cochino is used for a male, cochina is for a female.
S/he made a perverted remark, s/he's a cochino(a) head.

Throw on a head 

Get stoned. Mostly nyc mid eighties.
Yo smigz , let's throw on a head before we go to work.
Throw on a head by mevs September 8, 2016
More from Urban Dictionary
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

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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