UDK

Unreal Development Kit.

UDK is the world’s best game engine.

UDK by name used whatever November 12, 2011

udk

You Don't Know

person1:idk what to do

person2:your right udk what to do

udk by CrazyPlayer101 April 22, 2017

udk

Common short way of saying, YOU DON'T KNOW!! Often followed by, "Nope, nope you don't."

Rakhi: What's up your butthole?
Aaron: Dude, idk.
Rakhi: DUDE, UDK.
Aaron: W00ts your butthole.
Rakhi: I guess
Aaron: Duh.

udk by Donosaur's Mommie August 4, 2006

Udk

Udk is a Trinidadian slang word meaning "you done know" which also translated out of creole English means" you already know"

Evangeline: Adeline are you going to the party tonight?
Adeline: Udk ,of course, what kind of question is that?

Udk by XvjadevX July 7, 2018

udk

Uhh, dont know

“Hey Jack wana go get some bagels”

“Udk, bro”

udk by 2chinzzzzz July 8, 2018

udk

a bastardised version of i.d.k.
either as an acronym for "U don't know" or "yoU Don't Know"

-or-

a typo of idk, ugh, or both. Creating an onomatopeoia of confused complaining

if you're not into that sort of thing, then udk

udk by anonymous February 2, 2021

UDKS 

you don't know shit

you are talking crap. udks

UDKS by kfur November 22, 2010