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 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

by mfj7 August 12, 2018
