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To be incredibly exhausted and tired, to the point of deliriousness. Often implies the exhibition of strange behaviours (weird verbalisations and lack of coordination) due to exhaustion.

Originated from a mispronounciation of drowsy (possibly due to exhaustion): dwousy.... Dwizzy
Oh god, I'm too Dwizzy to live
by Slinky Meow February 26, 2012
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