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1.
the excrement of the defecation of an extemely smelly animal.
Gary: Knock Knock
Church: Whos there?
Gary: You are.
Church: You are who?
Gary: You are a dirty dirty shizno Ha Ha Ha

Gary: Andy and I are not on speaking terms right now. He is kind of jerk.
Andy: Im not the jerk, your the jerk, jerk.
Gary: That was kind of rude.
Andy: Ah shut up you shizno!
by sam April 26, 2005
 
2.
(Also Shisno) Is a word used by the character Gary from Red vs Blue. It is the excrement of the defecation of a foul-smelling animal. It is also an insult (i think) for the human race.
Gary: Andy and I are not on speaking terms right now. He is kind of jerk.
Andy: Im not the jerk, your the jerk, jerk.
Gary: That was kind of rude.
Andy: Ah shut up you shizno!

yes i copy-pasted the example done by sam, wanna fight about it?
by WhyDoYouCareWhatMyNameIs??? May 13, 2007
 
3.
a shizno is a smelly animal who's excremeant produces it's own defication: often used as a insult
look what you did to my shirt you damn shizno!
by flaminshiz April 10, 2007
 
4.
The essence of being dirty and idiotic. Shizno's usually are able to go beyond the normal limits of human stupidity.
Oh my goodness, Raffi is such a shizno.
by John Dunbar November 13, 2006
 
5.
the sandwich restaurant, quizno's in a more gangster word.
Let's go to shizno's to get a sandwich!
by Rachaellll September 05, 2007
 
6.
One who stupid, or is performing stupid acts.
Dude you're such a shizno.
"dumbass"
by Xander^Cage July 09, 2006
 
7.
Something/someone who is concidered "cool" or "great". Can also be used as an exclimation. Not to be confused with Shizni.
"Free pancakes?! Shizno!"
"Yeah that Dick Cheney, is he shizno or what?"
by Uruloki November 10, 2003