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Obsessive-Fan

Obsessive-Fans are the scary kind of fan. They know EVERYTHING about their fandom. They have it memorized. Obsessive-Fans blow a fuze if they miss a single movie, blog, T-shirt, etc, of their fandom. They take it RIDICULOUSLY serious.
Obessive-Fans are avoided by Proper-Fans and Casual-Fans, though Psuedo-Fans latch onto them in an attempt to look like Proper-Fans.
Note: It is possible to be an Obsessive-Psuedo-Fan, becoming Obsessive with every new trend. It is also possible to recover from being an Obsessive-Fan, though it is usually very difficult.
Jill is an Obsessive-Fan of Twilight. She knows every speck of trivia, and if someone so much as gives her a weird look when she's going on about Twilight, she'll have his head. Literally. Jill's room is full of Twilight posters. She has mutltiple copies of each book. EVERYTHING in her life revolves around Twilight.
Obsessive-Fan by Master Beth July 18, 2010

Obsessive Muse Fan 

Cat, originates from a girl called Cat, who is obsessed with the british band, Muse.
Oh look, there's a Cat collapsing at the sight of Matthew Bellamy!
Obsessive Muse Fan by Indeed June 1, 2004

Obsessive Muse Fan 

Anyone who has heard of the song con-science. This also applies to the cave remix.
'What are you listening to?'
'Con-science.'
'Who's it by?'
'Muse.'
'I have all their albums, and I've never heard it. Seriously, you are an obsessive Muse fan.'

obsessive fangirls 

A girl who goes over the top as a service to her favorite person/thing.
"Did you see that fangirl at the anime convention? She had on this gay Naruto costume.
obsessive fangirls by Atomisk May 13, 2005

Over-Obsessive Fangirl 

Someone who is so closely involved with certain fandoms (whether it be a book series, a tv show, a celebrity, etc etc) that it completely destroys their mental health and social life. Someone who can't go 10 minutes without thinking about their obsession and crying silently to themselves. These types of people have had their lives taken over, so don't act surprised when you find their secret shrine at the back of their closet.
"Hey, is Emma coming to the party tonight?"

"Nope, she's gonna be in her room for the rest of the night watching Twilight reruns."
"Oh yeah, I forgot she was an Over-Obsessive Fangirl."
Over-Obsessive Fangirl by Mh188 August 11, 2018
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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