fifteenth base 

The act of raping a squirrel.

Dude, my Asian buddy was able to get to fifteenth base yesterday! I tried and couldn't fit.

fifteenth base by thefixer551 November 17, 2009

first and fifteenth 

it refers to the time when a drug dealer or hustler is likley to make most of his or her money sellin crack, considering the fact that govement checks are issued on these dates every month.

N.W.A. "Clockin much paper on the first and fifteenth"

first and fifteenth by Bobby R September 29, 2005

June Fifteenth 

Boys with the last name that starts with ‘N’ and/or the first name that starts with ‘J’ get their dick sucked and/or get to put their dick in whatever hole they want on June Fifteenth

Girl 1: why are you buying lube?
Girl 2: because it’s June Fifteenth and idk what Jake wants yet

June Fifteenth by AlexismfTexas October 16, 2019

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.

fiance fifteen by wesleywhatwhat July 13, 2010

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.

Fifteen hundred is good. Your captain will be pleased. by Nihlus November 21, 2010