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To act in a manner befitting someone of a lower IQ level. This behaviour is not learned but most likely inhereted as a natural mental state. 2nd. To act in an anti-social manner that angers people or causes them to think very little of you.
K: The things he says are just so unbeliavable sometimes... like I can't believe that he says that.
G: That's simple, he's just Tannerly right now.
by plutocrat_FTW January 13, 2009
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