a state, commonly seen in preteen girls, in which one becomes very excited, hyperactive and giggly. This can happen randomly but is commonly induced by having a crush who likes them back or other silly dramatic things like that.
Cassy just told me that Thomas likes her + now she's all twiderpated and won't shut up.
by frostedface September 2, 2007
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When someone is completely flustered over something very easily understood, or when they just cant seem to grasp the general concept of why some one is doing what they are doing.
Ie. She was all twiderpated when her friends told her that her hair looked awful.
Ie. "Dude shes like 250 in a bikini, im all twiderpated, how'd she get that thing on?"
by Lilmoejane July 12, 2006
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Also known as: Peter Pan Day, Geoffery Day, IDWGU Day.

Not to be confused with traditional Sunday Fun days.

Or Festivus festivities.

Originally celebrated 2011 in Milwaukee WI this is a day in which all members of a particular social pond break from otherwise responsible life styles to enjoy a day of no cares worries or responsibilities. These days generally include mistaken time zone recognition as 5 O'clock is observed with breakfast lunch and dinner.
My boss just told me Im working through the weekend, I cant wait for twiderpation day!

Twiderpation Day was so awesome I totally forgot I was in WI!!!
by Peter Banning April 3, 2011
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