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by HekkaiMar November 24, 2013

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!"
Blair: "Really? What's that?"
Todd: "I learned that U Dum!"
by weenius September 10, 2010

Internet slang for "you're an asshole". First coined on Sherdog.net in a thread where a user posted a pic of himself wearing hand made Red Bull armor.
by RankFeral June 16, 2008

by BObo D. HObo July 10, 2004

by Iwanttofuckforaliving October 15, 2018

This is a nickname for the University of Illinois at Urbana-Champaign. Not to be confused with the University of Iowa ("UI" or simply "Iowa") or Indiana University ("IU"). This phrase carries with it a certain image/feel, as the University has built up a notable culture over its' century and one half existence and the phrase "U of I" quite possibly is the best label for that culture. The culture includes a passion for basketball, drinking holiday Unofficial, superb academics, and or course, a lot of orange.
College counselor: "Are you looking at U of I for college, Jimmy?"
Jimmy: "Of course I am! Its' culture is unbeatable."
Jimmy: "Of course I am! Its' culture is unbeatable."
by Subway142 March 5, 2013

Originated from 'Fuck you' but became a synonym of 'Screw you'. Used to avoid being censored by swear-word filters, whatsoever.
Person1: Oh the cake looks awesome...
Person2: I know right?
Person1: Could I get a slice?
Person2: Did you help me make it? No.
Person1: Oh c'mon.
Person2: PAK U.
Person2: I know right?
Person1: Could I get a slice?
Person2: Did you help me make it? No.
Person1: Oh c'mon.
Person2: PAK U.
by Pattttt.<3 May 26, 2009
