An expression referring to the faces of characters in the webcomic Ctrl+Alt+Del. When turned on its side it resembles their typical facial expression.
by Lupin III March 21, 2008

A popular phrase among internet users or gamers, usually in response to another's anger or misfortune. Also considered as a form of trolling, due to its potent nature.
Other similar phrases include, 'u mad breh?' 'why u mad?' and, a personal favorite, 'LOL WHY U FOAMIN, BREH??"
**When trolling, it is advisable to type in all capitals and use a large amount of spelling errors. What will piss someone off more: You mad, or LOL U MAD?**
Other similar phrases include, 'u mad breh?' 'why u mad?' and, a personal favorite, 'LOL WHY U FOAMIN, BREH??"
**When trolling, it is advisable to type in all capitals and use a large amount of spelling errors. What will piss someone off more: You mad, or LOL U MAD?**
Rager: 'u mad' is a dipshit response when some sissy kiddy on the net can't respond because he don't accept his ghey self.
Gamer: u mad.
*Rager has disconnected*
Gamer: u mad.
*Rager has disconnected*
by RPG? July 23, 2010

it's an abbreviation for Ubiquitous Korean International / Idol Super Star. This is a Korean group which composed of 7 members.
by Rina Lee October 21, 2010

by Lil ant June 3, 2018

by zoomzoomthefastestniggaalive October 11, 2019

by cockman101 June 21, 2020

We are now tuning in live to this intense game of no u tennis!
A: you're fat!
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
ad infinitum
A: you're fat!
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
B: no u
A:no u
ad infinitum
by Cheesy Meatball February 10, 2021
