Somebody who rips people off or does things that only benefits themselves.
Don't make deals with him, hes a shiester.
a shiester is a person who is shiesty - or low-down and dirty.
Probably someone you'd smack with a concrete c*ck, if you could.
"That shiester just left a buttery dollar in my yard."
one who loves to shiest people out of things they deserve
Joe stop acting like shiester mcdougal
An affectionate or friendly way of addressing a person or pet who is often rambunctious and obnoxious/a troublemaker
Tommy's cat always bites peoples toes, hes such a little a shiester.