an individual whom acts in a scheming and sneaky (weasel rat bastard) manner in select situations
Anthony Tavormina is a shadey shiste because one called him and saw him ignore the call. IN addition his cellphone is prepaid and he has a "wednesday shirt"!
by Flonson Khabot January 30, 2005
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Fred: "Can you believe I just finished a supermonster?"

Hewbert: "Shiste Monkeys!"
by calebmknight August 17, 2011
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The Lonely Goomba's try at a mix of the word shit and piss

Now stare at the random mario Can-Can ( ͡° ͜ʖ ͡°)
Wario! Quit swimming in all of that shist!
by X_-ProPlayerz-_X (YT) October 15, 2016
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