Shiesty usually refers to an action that is greedy and/or inconsiderate. When someone is shiesty it means they dont think about others and do things that help them even if they know it harms someone else in anyway.
An example of when someone is shiesty is; You ask someone for gum and they say they don't have any, but he/she really did have gum but didnt want to give you any.
by Zane Lavallee February 11, 2010
Pooh Shiesty, that's my dawg
But Pooh, you know I'm really shiesty!
by Big blrrd March 23, 2021
A person who you cant trust and does shady things behind your back.
EX 1 TAYLOR SMYTHE
EX 2 Dude meredith taylor is so shiesty.
by BAR04 February 11, 2009
to be shady or wavering in general trustworthiness. To invoke feelings of unreliability and hesitancy in people. To have inexplicable trust in shady organizations and characters
Pooja Jani is shiesty as hell.

Yooo, you just pulled a Pooja Jani
by shangsta August 24, 2010
a term popularized by Pooh Shiesty dick riders, usually used to describe a selfish or inconsiderate action.
person 1: “yea he bet $300 but never paid up”
person 2: “that niggas shiesty as hell”
by novaky March 9, 2021
To be a shiest

Adj: To be bogus toward someone or something.
Damn, that bro did me shiesty by stealin my shoes
by The Ay dog November 22, 2010