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Arch-Ex-Friend 

A person who was once someone's closest friend, but who became their worst enemy.
The pain received from having the worst enemy is worse, because of the painful loss of a friend.
Both parties usually become bitter and obsessive.
Josh: What? Why aren't you with Sara? You're always with her!
Jade: Oh, she's my Arch-Ex-Friend now. Haven't you seen her bitter attacks on Facebook?
Arch-Ex-Friend by Reformed August 13, 2010
A person who you were once friends with, but are no longer friends with, usually due to some kind of an argument.
Jana: "I was friends with Kathryn, until she stole my boyfriend."
Amanda: "Damn, Kathryn isn't a good friend then."
Jana: "She's not my friend anymore, she's my ex-friend."
ex-friend by jj1110 September 25, 2011
A person who you used to be friends with, but are no longer friends with, usually due to a fight.
"I was friends with Callie, but after she said all of that shit to Trent, and backstabbed me, we are no longer friends. She is my ex-friend.
ex-friend by yushouldknowme December 1, 2011

Ex Friend 

1.Someone who you wish would realise their mistake
2."When being right is more important than being friend then that's the end of being friends"
"If they were really your friend they wouldn't want you to apologize" "I want to be your friend again! I'm sick of being a Ex Friend!"
Ex Friend by cheryIblossom June 12, 2018
A person who used to be your friend.
Me:I used to be friends with Niko,and we are ex-friends now because he was talking bad about me,and said that I suck.
Luigi:I am ex-friends with my very good friend Lorenzo because he doesn't talk to me anymore when I was talking to him,and he was running away from me when I was trying to hang out with him.
ex-friend by LL6000 May 22, 2016
A person who you were friends with through an Ex and though they might be cool people you can't hang out with them anymore.
When Maria and I broke up I had to stop hanging out with her best friend Jane because we had become ex-friends.
Ex-friend by Wheresthepineapple September 7, 2010
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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