know one's stuff

To be a master of something, to be competitive in a particular field

Urban Dictionary knows its stuff in slang words definitions (neutrum form of "know one's stuff")

by TomPigeon January 15, 2014

losing one's cool

To lose one's composure. Most people lose their cool when prompted by a negative impetus, like sexual rejection or poor brunch service.

"Losing one's cool is the sexual equivilent of an angry, limp penis."

by Poop.butt. April 11, 2014

made that one up

To tell a damn lie

So you used to date Beyonce before she blew up? You made that one up.

by Ramal March 29, 2015

One Year Stand

When you're in a shitty relationship and the only good thing is the sex.

Barb: Jenna, honestly, I don't know why you stay with that asshole."
Jernna: That dick, though.
Barb: So, it's like a one year stand?

by EuphoricDisaster July 21, 2015

One eyed mask

When you do a runny shit on someones face when they are asleep sunbathing and you put a coin on their forehead. The coin heats up and when they wake up the shit has dried and the coin has left a mark on the forehead that looks like a big red eyball.

Karen drank to much while sunbathing and passed out. When she came to, jono had given her a One eyed mask.

by DoctorSparky October 3, 2018

one woman uso

One Woman USO is usually an attractive promiscuous woman with a uniform fetish, than not only does Charity and volunteer work for the troops like raising money for organizations and sending care packages. One Woman USO also provides services needed to help boost morale and help with PTSD and Depression via Sex

That chick is a one woman USO

by Reikireika October 10, 2019

One-Chat-Stands

Twisted Cliche:

A 'friend' on XboxLIVE/ PSN/ Steam e.t.c. Whom you have 'added' based on shallow foundations /values (e.g admiration of playing ability) and experience. You have merely chatted to them once and never intend to again due to the impersonal nature of this connection.

"Most of my friends on PSN are One-Chat-Stands"

by Mr. Vaccum Science December 23, 2011