1. A woman many paygrades above a Karen. Not only does she want to see the Manager, she wants to control what time the Manager takes a dump wile they're at work.
2. Control freak. Victim. Narcissistic cunt.
3. Someone who fingers their sister
"omg did you see how Susan acted out after the Manager told her she couldn't have a lollipop?! Gosh she must still be pissed her sister didn't return the favour after she fingered her"
Used in internet slang, this originated as a failed autocorrection of the word stan.
It can be used to express excitement, approval or praise.
"You got an A+? Susan!"