When someone is 'shistey' it refers to a shit
head being extra shit headish; sometimes the intensity one can become can escalate to an emotional/personal
level and the person can become
ButtHurt.
(Often used in the succession "shistey
cunt" or "shistey bitch")
Hey, how was work with that shit head
Connor?
Slow, but he was being extra dickish. Shiesty
cunt.