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1.
A serious condition where the individual, in the week after a Model United Nations trip, attempts to use a placard with his or her name on it in school to speak or feels it is acceptable to pass notes or bring motions in the classroom.

This syndrome often results in embarrassment or reprimand.
Sid: Point of Inquiry!
*raises placard*
Teacher: What?

Sid: Oh sorry, I still have Model UN Syndrome.
by foolfromhell November 23, 2009