Short for User Interface. Often related to games. Some games have the opportunity to install addons to change the user interface.
WoW-gamer1: zomg what a nice UI on that screenshot!!1one
WoW-gamer2: y, i know ^_^ but mine is teh most 1337!!1
by Håkon September 05, 2006
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It is an acronym which stands for Ugly Indians. It is mainly used among friends while surrounded by a group of fugly brown people mainly of the Indian origin.
OMG look, there are so many UIs on this Air India flight.

There are UIs in every corner of this world.
by MSD007 January 03, 2012
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The South African version of Chuck Norris but more interesting. Some people believe that the Dos Equis man was based on an Uys.
Here comes Uys... He is so badass, if I was a baddie I'd be scared. My wife finds Uys attractive, he makes me feel insufficient.
by Lettiez April 11, 2010
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A boyfriend of 4 years – yes an entire 4. If one only for 3 years then he is not a Uys after all (who knew). Uys is charming, energetic, fun to be around, dashing, handsome, a gentleman, caring and so much more! It is NET Uys ja, NET Uys!

P.S. Acronyms for Uys: Under Your Spell and Ultimate Yard System (the latter being soooooo true)!
Person 1: “I’m so annoyed my yard is a mess”
Person 2: “Get an Uys – he is the ultimate yard system, your yard will look good in no time AND he’s good to look at too – you’ll be under his spell!”
by Schhhhhh.... May 09, 2011
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