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sounds like "is"
Alternatively spelled "sheeznat" (sounds like "ease"). Literally translated means "shit", but is only used to describe something good.
Must have the word "the" preceding it, as in "the shizznat"
"This burrito is the shizznat", or "that game of Twister was the shizznat"
by BeaverBoy November 19, 2005
A term meaning something that is very cool.
Feminem.com is the shizznat!
by Aintyo Bidness May 14, 2004