Udum 

Perhaps the best singer in the world, Udum has won every emmy and oscar there is.

Udum rocks!!!!!! I hope he is reading this!!!!!!

Udum by D November 21, 2004

U Dum 

U Dum is a game where you, the player, tries to get the attention of another player in a variety of ways. After gaining their attention, you immediately shout "U Dum!" However, the defending player may preemptively shout "U Dum" after you have gotten their attention, nullifying your initial attempt.

Todd: "Hey Blair, I learned something interesting about you this weekend."

Blair: "Really? What's that?"

Todd: "I learned that U Dum!"

U Dum by weenius September 10, 2010

UDumber 

Noun: 1. A person who uses UD posts for personal vengence, not realizing it makes them look pitiful. 2. A person who posts their own name on UD, not realizing it makes them look like someone you want to avoid at all costs.

That UDumber put the name of the girl who dumped him on. Has he lost his mind?

UDumber by magill March 22, 2008

boi u dum 

boi u dum is the worst insult ever created so dont use it regularly

eric: DiD u SeE ThE nEw FoRtNite SkIn? me: BOI U DUM

boi u dum by OK KO February 9, 2021