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john is a term for a male or female that is a dull, pathetic, unfunny, sad person, he tries and tries, he wishes he had a girlfriend, he wishes he was smart, he wishes he was funny, he wishes he was happy, but he's just not smart enough to know how to do it.
1) jack we're trying to have fun, don't be such a john
2) god, you're a john
3) yeah shes such a john
a john by YourTypicalNerd May 18, 2019
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A John Mount 

The act of walking into a friends house with the sole intent of dropping a nasty smelly dump in their bathroom and feeling no pity.
Ex: Yo bro i just pulled a John mount at toms house dont go in there.
A John Mount by smashndash69 October 12, 2012

A John McAfee 

A John Mcafee is crypto currency slang for when a specific crypto currency coin is targeted with misleading and fake news to drive it’s price up or down. The act is often used to artificially inflate or deflate market prices to benefit the purpotrator (the ‘John Mcafee’ benefactor).

The act of ‘pumping’ and/or ‘dumping’ the coin price is then denied and lied about by the perpetrator in order to cover up the immoral act.

The acts of changing the price via fake news or unqualified opinions followed by backtracking, lying and covering up are collectively referred to as committing a John Mcafee.

The term is named after internet security guru John Mcafee who has a cult following in the crytocurrency space. Often his opinions cause huge movement in coin prices simply down to coming from him and are often contradictory and based on non-existent evidence.

The term then expanded over time to incorporate cover up and lying about the act after numerous examples of this happening.

The term is now primarily used more widely to highlight a lie or fake news report that has negatively impacted something followed by denials and rebuttals.
Vamps, what happen to the price of XVG coin?
Tell me about it, it was John Mcafee’d!
- The coin price was destroyed due to a John Mcafee.

You hear Linda blew off Zor last night?
Yeah man Zor got John Mcafee’d, she was told he slept with Naz!
- Someone lied to Linda and committed a John Mcafee

I was there, he definitely said that and look at what it did!
Yes he pulled a John Mcafee and then some!
- Someone is now denying saying something. They are committing a John Mcafee.
A John McAfee by Wouldzey December 30, 2017

A John Lennon 

Verb. To bring a female into a group of friends, just because you are dating her.
Fredrick is trying to pull a John Lennon on us by bringing his girlfriend to our club meetings.
A John Lennon by 3guyjoe November 18, 2013

A John Wick 

Someone who is very good at what they do. These days, it’s primarily used in Fortnite, where the most prestigious skin is one of John Wick.
Ethan: Yo it’s a fucking John Wick!
Leah: Aah! A John Wick!
*John Wick rocket riding across the map*
Jason: Fucking John Wicks.

A John Mayar 

Making a joke which is about as good as one of John Mayars hits...eg; crap.
Sam cracked A John Mayar to David and friends.Nobody Laughed.
A John Mayar by Matts B November 26, 2006

a john howard 

Shovel poo from ones bum

And smear it on another person's eyebrows
She looks like she's had a john howard
a john howard by leroy 1111111 October 21, 2022
More from Urban Dictionary
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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