UMO 

University of Maine at Oronoz; noun. kick ass collage, even better parties. girls are sluts so u kno ur gonna get a peice of ass when you go out.

as in: UMO is the collage to be at, go black bears

UMO by Alexblack42 April 11, 2008

UMO 

UMO (Ugly Motherfucker Objects) are some creatures that have no brain.They are very very ugly as fuck.UMOs have the ‘UMOGLOBINA’ in their blood and they have a disgusting smell.UMO-s are very dangerous so be careful they can inject the ‘umoglobin’ to a normal person turning him in UMO.UMO-s habitat is DAKAR country but they live worldwide

1-Do you know him?
2-Yes he is a UMO.
1-Holy Sh*t lets get hell away from him.

UMO by Viktor Spartani June 8, 2018

Ethan Vincent Umo Meyer 

A person that helps people and feels happy for everyone. They are very active and good at most of sports. They are outside lots and likes to adventure.

Ethan Vincent Umo Meyer is the best person ever.

Ethan Vincent Umo Meyer by Ethan Vincent Umo Meyer May 26, 2021

umop ap!sdn

It's upside down, upside down...but without the 'i' mistake.

umop ap!sdn is the best thing since 5318008 on a basic calculator!

umop ap!sdn by Renegade0894 March 29, 2015

umop ap!sdn

It's upside down, upside down...

umop ap!sdn is the best thing since 5318008 on a basic calculator!

umop ap!sdn by Renegade0894 March 29, 2015

umop apisdn 

= "Upside down.": Read Upside down, and backwards.
Try using Ctrl+Alt+Arrow-Down

Do you know Jack Johnson? He wrote this song: "umop apisdn".

umop apisdn by MopfMore April 2, 2015

umomc 

popularized by goons, for when you don't have a decent comeback to getting roasted

"umomc" stands for Ur Mom On My Cock

anyone: wtf dude, why didn't you flash?
R300G (Wukong): umomc

umomc by uzuy November 16, 2020