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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!"
by weenius September 10, 2010
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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
by OK KO February 9, 2021
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u dumb boi

said or done something incredibly stupid
so my brotha said "man i feel like i can fly" and i said to him "nah u dumb boi"
by omgthatshim February 5, 2010
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is-tch'u-dumb

the most gangster way to say are you dumb to someone that is a retard.
"let's visit jenny"
"is-tch'u-dumb you know she is a bitch
by AFIkid January 22, 2007
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U Dumb As Hell Boy

said by Conner Temple Tv.

He Called Me Dumb
"Wheres the Gc" "U Dumb As Hell Boy"
by fouledanchors June 22, 2022
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u dumbass we do not have a website

hahah. u so unbelievably dumb
person 1 says some dumb shit
person 2 kicks him out of the conversation, puta him back later and semds this link. person 2 put a lot of time and effort in this site.
person 1 klicks the link and be sooo fucked. he be thinking:" lmaooo he got me gooooood"
u dumbass we do not have a websitebis used for that exact reason
by benjiboy 1837282993 June 10, 2018
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Y U DUMB? Elementary School

The name of the school in SML...
I just went to Y U DUMB? Elementary School - I give it one star because the teacher (Jackie Chu) is dumb
by PhoneGuyYT June 3, 2025
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