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Fifteens 

"Fifteeens" refer to 15 inch subwoofers in a car audio system.

For those who don't know, that's fuckin huge. And the shit kicks.
And like a fiend fo' the weed I'll tweak.
4 Fifteens in yo' trunk that's beat,
Proper ass amps, Zapco, Alpine.
Put the coke on the dash,
roll a dolla do a line.
-Andre Nickatina

I'm takin' chunks from punks who want funk,
Treat em like 15's, put em in the trunk.
-Brotha Lynch Hung
Fifteens by Jaynik August 27, 2008
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Four Fifteens 

A slang word most commonly used in modern african american culture referencing four fifteen inch subwoofer car speakers.
ay nigga my four fifteens woke up yo neighbors.
Four Fifteens by DROverdosed89 November 25, 2009

fiance fifteen 

the fifteen pounds that many girls lose between their engagement and their wedding.
look at that skinny bitch! she's lost a lot of weight since she got engaged.

well, you know she can't fit in her wedding dress without losing that fiance fifteen. she bought a size 2.

fifteen minutes 

A proverbial period of time for one's short-lived fame.
This band's fifteen minutes are just about up because nobody listens to them anymore.
fifteen minutes by Albert February 15, 2004

Facebook Fifteen 

The shortlived fame someone seeks and receives by doing something stupid only for people to forget about it shortly thereafter upon realizing its insignificance.
Joe: dude, did you hear about that girl that drank 20 red bulls a day?
Jeff: yeah, she just wanted her Facebook Fifteen
Facebook Fifteen by Dirk Pitt June 27, 2017

Fifteen hundred is good. Your captain will be pleased. 

Quote from the video game Mass Effect, spoken by Nihlus. Used to unenthusiastically congratulate someone.
Joker: Drift, just under 1500K.
Nihlus: Fifteen hundred is good. Your captain will be pleased.

Mort: Holy crap! I got into MIT!
Mort's Father: MIT is good. Your captain will be pleased.

Pen Fifteen 

Pen Fifteen, translated to pen15, then translated from leet, means penis. Used by sofisticated nerd everywhere
User name 'Pen fifteen'
OMG look @ his Pen Fifteen
Pen Fifteen by SensenmanN December 12, 2005
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

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
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