One person crazy parade 

Noun
1. A person who is so crazy that they cause a spectacle and get people watching.
2. A person who is crazy to the point that they get followers who think the craziness is esoteric.

Concept comes from a person screaming and yelling loudly through public streets to the point that people line up along the sides of the road to watch for entertainment purposes.

My friend is so passionate about social injustice, she's a one person crazy parade.

When my friend realized that the restaurant obtained their bread from factory bakeries, he turned into a one person crazy parade. Fortunately I caught it on video. Viral-video famedom here I come.

One person crazy parade by MadMatter007 September 10, 2014

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?

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.

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

one woman uso by Reikireika October 10, 2019

One UI

One UI is a new software overlay that Samsung uses on their devices running Android 9 and higher that was released in December 2018

It focuses on making stuff easier to reach on bigger phones by adding big headers so that content appears lower on the display for easier one hand interaction. And it looks beautiful.

Ever since some companies like LG have taken inspiration and released their own UI that looks similar to One UI

I finally got that new One UI update for my S9

One UI by thatssoboring June 2, 2020

one it 

clowns. we believed that x1 was going to be active for 5 years but instead we got 5 months 🤡.

xx: who's x1?
one it: *cries*

one it by colorsyabuki September 2, 2020

One shot in diep.io 

Killing someone with one shot when they are at full health

The one shot in diep.io was OP

One shot in diep.io by GalaxieBoi Gaming March 3, 2022