A fifteen 

A fifteen out of 10, much hotter than a regular 10 out of 10.

That Jessica is such a fifteen

A fifteen by JimmyDicky July 4, 2017

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

Fifteen Minutes 

the 15 minutes of personal fame that Andy Warhol said everyone gets once in a lifetime

She got her 15 minutes when she appeared on that tv quiz show.

Fifteen Minutes by R.C. December 11, 2003

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

Fab Fifteen (Noun)

15 repulsive whores from Massapequa, who barely graduated from high skool. They are envied by none and hated by all. NO generations look up to them. Thier knowledge of partying is the extent of 15 of them splitting one bottle of wine, then faking drunk while participating in lesbian encounters

the fab 15 should be demolished immediately

Fab Fifteen (Noun) by MIKE STACKPOLE April 2, 2005

Finals Fifteen 

Similar to the weight college freshman gain in their first year of college, but this is the 15 pounds everyone puts on during finals week. This can be credited to the amount of coffee and snacks consumed while staying up late studying.

Last night I stayed up until 3 A.M. studying for my biology final; I ate a whole box of Cheez-Its, two Little Debbies cream rolls, and four cups of coffee. Yeah, I am definitely going to gain the Finals Fifteen.

Finals Fifteen by RUFFLESx December 30, 2009

Fifteensome 

The limit of the "somes". Anything exceeding this is considered an orgy.

- Dude! I had an amazing sixteensome last night!

- *SMACKS* You FOOL! That is considered an ORGY! A fifteensome is the limit, buckaroo.

- Oh shit dude, sorry, I didn't know...

- Do not grieve fellow, we all have much to learn...

Fifteensome by xXThotSlayer69Xx June 1, 2018